Nutrition & Physical Activity
It's great to spend some of your free summer time getting more physically fit by starting an exercise program. Indeed, exercise is one component of a healthful routine — especially if you're looking to drop a few pounds. Depending on the types of activities you enjoy, try to get either 30 minutes of moderate exercise (increased heart rate, but still able to carry on a conversation) on at least five days per week, or 20 minutes of vigorous exercise (sweating, breathing heavily) on at least three days per week. There isn't one "quick" exercise that will help you shed pounds, but if you follow the guidelines above, and eat a sensible diet, you'll be on your way to a sustainable, healthy weight for you.
In order to lose weight, most people need a combination of increased activity and reduced caloric intake. Beyond weight control, exercise yields important health benefits, including:
- reduced blood pressure
- improved sleep
- stress management
- increased level of good cholesterol (HDL)
- improved blood sugar levels (among numerous other positive effects)
We can't pick and choose where on our bodies we lose fat. Although it's possible to tone and strengthen specific muscles, fat won't be diminished in a specific area by lifting weights or doing certain exercises focusing on that body part. Body fat is decreased when we expend more calories than we take in — but we can't control exactly where fat loss will take place. For instructions on activities that'll help tone and strengthen your thighs, stomach, and hips, check out the Related Q&As listed at the end of this answer.
Since your schedule can be particularly tight, you can incorporate exercise into your daily travels. Biking or in-line skating to your destinations is a possible option, perhaps as a way to keep active during the school year as well. Taking the stairs whenever possible, getting off the bus or subway 1 or 2 stops earlier, parking further away if you drive, or even walking to work or school all contribute to your goal of being healthier by incorporating more movement into your life.
If you're looking for a "total body workout" for the summer, consider swimming — which can also be a cooling activity if your summer is a hot one. Swimming engages many muscles and provides cardiovascular benefits, too. Varying strokes can help work other muscles (such as the breast stroke) or provide greater cardiovascular benefits (such as the butterfly).
There's no secret easy answer, short-cut, or abbreviated workout that will yield magical results. Working each muscle group at least twice a week helps strengthen muscles. Although everyone responds to exercise at different rates, usually one or two sets of 8 to 12 repetitions, working the muscle to fatigue, is usually sufficient for strength building.
To maintain a fit body, it's essential to carve some time into your schedule for exercise and planning healthy meals and snacks -- however, as you can see, it doesn't have to be a lot of time. Scheduling these kinds of activities in your calendar as you would with social activities may help. You can also make plans to exercise with a friend, multi-tasking this way can give you plenty of time to socialize and exercise. Columbia students can score some extra motivation by signing up for Columbia's CU Move motivational emails. You can also visit the CU Move webpage for other physical activity related information. Best of luck getting started!
Regardless of your activity level, breakfast is an essential part of a healthful lifestyle and is also important for maintaining energy all day long. The motto here is anything for breakfast is better than nothing at all. Think of your body as a car and food as gas. Without gas, your car cannot get from one place to another.
The rate at which your body uses calories for energy is known as metabolism. Think of metabolism as the motor of your car. Metabolism is directly related to energy levels, so the higher your metabolism, the more energy you have throughout the day. When you are sleeping, your body naturally decreases its metabolism. When you wake up, there is an increase in metabolism, which peaks by noon. How much energy you have during this time is contingent on how much food calories your body has to use for energy. Breakfast becomes the first stop to the gas station before your road trip. So basically, eating breakfast actually helps maintain high energy levels throughout the day. In fact, the more hearty a breakfast you have, the more your metabolism motor will roar!
You do have to stick to some guidelines, of course, to promote optimal energy.
The best range of calories for breakfast is between 350 to 500. Below 350, your body will not fulfill the requirements for morning energy usage; above 500, your body may store unneeded calories as fat.
Plan and eat a balanced breakfast meal including complex carbohydrate, protein, fat, and a fruit or vegetable.
Quantity to Aim for
- 1 to 2 servings of complex carbohydrates. One serving equals 1 piece of bread, ½ cup of cooked oatmeal, 1 cup of dry cereal, 1 English muffin, ½ bagel, ¼ cup of granola, 1 small muffin.
- 1 serving of protein. For example, 1 cup of yogurt, ½ cup of cottage cheese, 1 ounce of cheese, 1 large egg, 2 ounces of smoked salmon, 1 cup of milk or soy milk, 2 tablespoons (T) of peanut butter, or ¼ cup of nuts or seeds.
- 1 serving of fat. E.g., 1 teaspoon (t) of butter, 1 t of oil, 1 tablespoon (T) of cream cheese. But check your protein and carbohydrates for fat, there's no need to add extra if you have a serving of fat in your granola or omelet.
- 1 serving of a fruit or vegetable. That is, 1 medium piece of fruit, 1 cup of cut fruit, ¼ cup dried fruit, 6 ounces of fruit juice, 1 cup of raw or ½ cup of cooked vegetables, 1 cup of vegetable juice.
Some examples of energizing breakfast meals include:
2 pieces of toast
2 T of peanut butter
1 medium banana
2 servings of complex carbohydrates
1 serving of protein
1 serving of fat
1 serving of fruit
1 serving of complex carbohydrates
1 cup of cooked oatmeal with
1 cup of 2 percent fat milk
¼ cup of raisins
2 servings of complex carbohydrates
1 serving of protein
1 serving of fat
1 serving of fruit
1 small muffin
1 cup of plain low fat yogurt
1 cup of orange juice
1 serving of complex carbohydrates
As you see, there are many delicious ways to get from point A to point B every morning. Imagine your surprise when you see the results with more energy!
Dear Perplexed by protein,
You're not alone — this can be a confusing subject. First some clarification — a complete protein is a protein that contains all nine essential amino acids (the building blocks of protein, which can only be obtained through eating food). Complete proteins come from animal-based products (meat, poultry, dairy, eggs, fish, etc), soy, and quinoa (a grain). An incomplete protein contains fewer than all nine essential amino acids, however incomplete proteins can be combined in meals to make a complete protein (for example by combining rice and beans or peanut butter and toast). These foods don't need to be eaten at the same time in order to be used by the body to build protein, as once was thought. We just need to eat these complementary proteins within 24 hours. Incomplete proteins come from plant-based foods, such as beans, rice, grains, legumes (other than soy), and vegetables.
Our bodies use amino acids from foods to make proteins. As a matter of fact, the amazing human body manufactures all types of substances — from hormones to muscle tissue, blood cells, enzymes, hair, nails, and many others — given the right proportions of amino acids.
All of the foods you mention contain amino acids, and therefore varying amounts of protein. Just because they don't contain all of the amino acids we need doesn't negate the fact that they contain some protein.
Although protein is a vital nutrient, our bodies don't require quite as much as you may think. The U.S. Recommended Dietary Allowance (RDA) of protein is 0.8 grams/kg per day for adults. This recommendation has been shown to meet the needs of 97.5 percent of the population. For a woman weighing 125 lbs (57 kg), her needs would be met with an intake of 46 grams of protein per day. For a man weighing 154 lbs. (70 kg), his needs would be met with 56 grams of protein a day. A person must be taking in sufficient calories to maintain their weight for these values. Dieters need larger amounts of protein, because some is burned for energy. Athletes require slightly more protein as well.
It's believed that people usually eat a variety of foods, thereby getting the amino acids needed to manufacture complete proteins. Granted, if a person only ate bread, s/he would be missing an essential amino acid. The same would be true if a person only ate vegetables. However, if these vegetarians added legumes to their diet, they would be able to obtain all of the essential amino acids needed to remain healthy. The Food and Nutrition Board of the National Academy of Sciences (which sets the RDAs) spell out the amount of each essential amino acid needed to form complete proteins. However, it isn't necessary to go that far, as long as you are covering your protein needs with a varied eating plan.
To determine your protein needs according to the RDA, divide your body weight in pounds by 2.2, which gives you your weight in kilograms, and then multiply that number by 0.8. Consult the following charts for protein content in various foods. Adjust for the serving size and the number of servings you actually eat.
|Animal Sources of Protein||Serving Size||Protein (in grams)|
|Cottage cheese||½ cup||14|
|Egg white only||1||3|
|Plant sources of Protein||Serving Size||Protein (in grams)|
|Tofu, raw, firm||3 oz.||13|
|Legumes: (Black beans, Kidney beans, Chickpeas, etc.)||½ cup||7 – 8|
|Peanut butter||2 T.||8|
|Bread||1 oz. (1 slice)||3|
|Vegetables||½ cup cooked or 1 cup raw||3|
|Pasta or rice||½ cup||3|
So, as you can see, it's not difficult to reach your daily protein needs, as long as you include a variety of foods in your daily intake. Incomplete proteins needn't be too much of a concern. Vegetarians who consume complementary proteins are usually able to easily meet their protein requirements. Columbia students who would like more information can meet with a Registered Dietitian who can provide individual counseling and help students understand and meet their unique nutrition needs. If you're interested in learning more about healthy eating habits for yourself, please schedule an appointment. Students on the Morningside campus can contact Medical Services for an appointment and students on the CUMC campus can also schedule an appointment with a Registered Dietitian.
Many women athletes, once they end competitive play, work on reducing the size of their muscles in different parts of their bodies. As both a softball and soccer player, you are most likely performing power movements in order to train your legs. These power movements probably involve lifting very heavy loads for a few repetitions while weight training and performing explosive movements, such as pressing off of your pivot leg when sprinting.
The amount of muscle in your thighs can be reduced, but it may hamper your athletic performance if you are still active in softball and soccer. As a power athlete, you probably have a larger proportion of fast-twitch muscle fibers (Type II) than slow-twitch fibers (Type I), found predominantly in endurance athletes. Most of your muscle type will not change, as the type of muscle fibers do not predominantly change over the course of one's life. Basically, you are born with the primary type of muscle fiber that you will always have; however, a small amount may adapt to changes in your workout regimen. Resistance and endurance training enlarges Type I fibers, while inactivity causes them to atrophy. Likewise, training may alter Type II fibers, which come in two varieties: hybrid fibers (Type IIa) and glycolitic fibers (Type IIb). Weight training converts Type IIb fibers into larger Type IIa fibers. With disuse, Type IIa fibers revert back to leaner Type IIb fibers.
If you are no longer playing or simply have a strong desire to decrease the muscle size in your quadriceps and hamstrings that make up your thighs, consider cutting back on lifting heavy weights while strength training. As opposed to performing one to four sets for three to five repetitions at a very heavy weight (85 to 100 percent of your one-lift maximum, which is the most you can lift for only one repetition, after which, you cannot repeat the exercise), begin doing three sets for 15 to 20 repetitions at a low weight (approximately 50 to 70 percent of your one-lift maximum). Below are some leg exercises to include in your training:
- Leg press
- Leg curls
- Leg extensions
- Seated and standing calf raises
Another option to lessen the size of your thigh muscles is to introduce distance running into your training regimen, as long as you do not have or are not prone to any joint pain in your legs. This activity can transform the size and structure of your legs. This is because distance runners adapt to this form of endurance training by developing leaner muscular legs (even though the muscle type will predominantly remain the same). You may consider starting with one mile and then build up to five to ten miles during a training session.
People may be genetically predisposed to have strong leg muscles in their thighs. This might not only apply to you, but also may be a reason for your athletic success. Although your legs may not look traditionally feminine, it's important to recognize their beauty in performing strong, powerful moves when scoring a goal or running to home. Since it sounds as if you're still active in softball and soccer, you might come to terms with your priority — to stay competitive in these sports, to play at a more leisurely level, or to stop for the time being. Your choice will determine whether, how much, and for how long you can transform the muscle mass in your thighs.
The bottom line will be deciding whether it's more important to you to have strong muscles that serve you athletically, or smaller muscles and less athletic prowess (or power). If you desire both, and you cannot change what is in your genes, then you may be able to change how you view your powerful, capable body.
Being allergic to peanuts doesn't necessarily mean being allergic to tree nuts (and vice- versa). Being allergic to peanuts also doesn't automatically mean being allergic to other members of the legume family, such as lentils and soybeans. Similarly, being allergic to one kind of tree nut doesn't automatically result in being allergic to other tree nuts. However, most health experts recommend that people with peanut and/or tree nut allergies avoid all peanuts and tree nuts, just in case. A little introduction to peanuts and tree nuts might clarify this.
Peanuts are not actually nuts, but legumes, which are beans and peas. Peanuts, peanut products, and peanut by-products are found in many foods and in many variations, such as peanut flour, peanut oil, and peanut butter. The presence of peanuts in foods is tricky to identify; they can even be a hidden, unlabelled ingredient, such as hydrolyzed plant or vegetable protein. Also, cross contamination during manufacture of food products is another source of exposure to peanuts that can elicit allergic reactions, so some non-nut items are labeled as "may contain nuts."
Unlike peanuts, pecans are part of the tree nut family, which also includes almonds, walnuts, cashews, hazelnuts, pistachios, macadamia, chestnuts, and brazil nuts. Tree nuts are also present in a variety of foods and even in some bath and beauty products.
Allergy to peanuts and tree nuts, usually life-long, are two of the most common food allergies. Fortunately, many people with these allergies experience mild responses to the proteins found in peanuts and tree nuts, such as sneezing and/or itching. However, what is worrisome about these allergies is that some people experience severe enough reactions from miniscule amounts that can be life-threatening (e.g., difficulty breathing, loss of consciousness). In fact, about 100 people in the United States die each year from their peanut allergy. The most intense responses tend to be from ingesting food containing peanuts, tree nuts, or their derivatives, but inhaling air contaminated with peanut or tree nut dust, having skin or eye contact with something containing these items, and even kissing someone who recently consumed peanuts or tree nuts also can produce allergic responses. In particular, the sensitivity of peanut allergies and the prevalence of peanuts in our food supply and elsewhere have made peanuts a source of heated controversy for schools, camps, airlines, and restaurants concerning whether or not to ban them in these places.
What is in your control to prevent peanut and tree nut allergies is avoiding all peanuts and tree nuts (though accidental exposure could still happen no matter how vigilantly you avoid nuts). Educating oneself about the allergy (i.e., always asking about ingredients and reading food labels carefully) and preparing oneself for accidental exposure (i.e., always keeping epinephrine nearby) are other keys to managing a peanut or tree nut allergy. If you are uncertain about whether or not you can eat pecans safely, your health care provider may be able to refer you to an allergist. S/he can administer a skin prick, blood, and/or medically supervised food challenge test.
For more information about peanut, tree nut, and other food allergies, check out the Food Allergy and Anaphylaxis Network web site.
A cup of warm milk is no magic sleep potion, yet it is probably the most common food associated with bedtime. Milk contains two substances that are known to be related to sleep and relaxation, the hormone melatonin and the amino acid tryptophan. The amount of melatonin in a glass of milk is minute, much less than what would be taken in a supplement. The amount of tryptophan in milk is also small. In addition, our digestive process is complex. Considering these factors, it is unlikely that a glass of warm — or cold — milk would shorten the length of time that it takes to fall asleep.
Though milk components and serving temperature are not likely to influence the onset of sleep through physiological means, warm milk might have psychological significance. The routine of consuming a glass of warm milk may elicit memories of mom, home, and comforts of childhood that help us to relax. This is part of the natural transition from wakefulness to sleep. Recommendations include practicing stress reduction techniques, sticking to a regular sleep schedule, creating a relaxing bedroom environment, and avoiding caffeine or heavy meals close to bedtime.
For some individuals, particularly those with lactose intolerance or milk allergies, a glass of milk can be followed by uncomfortable digestive consequences. Lactose reduced, soy, almond, and rice milk are options that are more likely to be tolerated. If you have no allergy or intolerance, and warm milk simply grosses you out, you could try flavoring it with a bit of honey, vanilla, or cinnamon, but there is no reason that you need to continue attempting to use it as a sleep aid. Keep drinking your cold milk, to meet your daily calcium needs, and try other sleep improvement techniques.
February 27, 2012507786
November 12, 200821491
I am a lover of milk and love it cold or warm. I have always had success w/ warm milk lulling me to sleep. I have even had occasions when I've had a decaf coffee drink w/ steamed...
I am a lover of milk and love it cold or warm. I have always had success w/ warm milk lulling me to sleep. I have even had occasions when I've had a decaf coffee drink w/ steamed milk and it did me in for the rest of the work day. It really has worked for me in all the years that I have been doing it. As a matter of fact, it's a cool night where I am tonight and I'm going to have a nice warm mug of milk and maybe add a little honey and vanilla, curl up in my bed, and read until I'm done partaking... yum, what a treat! Sweet dreams, ya'll...
January 10, 200721178
I have been having trouble falling asleep and do not wish to use pills. I have found that 1 measuring cup of warm milk does put me to sleep. There is very little time between the...
I have been having trouble falling asleep and do not wish to use pills. I have found that 1 measuring cup of warm milk does put me to sleep. There is very little time between the actual drinking of the warm milk and my being asleep. This is not usual for me to fall asleep so fast, so it must be the warm milk.
March 3, 200621030
Just wanted to add that in most microwaves a minute is all you need to get it hot. 3 minutes is like cooking!!
Just wanted to add that in most microwaves a minute is all you need to get it hot. 3 minutes is like cooking!!
Canola oil comes from a hybrid plant developed in Canada during the late 1960s to early 1970s using traditional pedigree hybrid propagation techniques (not genetically modified) involving black mustard, leaf mustard, and turnip rapeseed. The original rapeseed plant was high in erucic acid, which is an unpalatable fatty acid having negative health effects in high concentrations. Canola oil contains less than 1 percent erucic acid. In fact, another name for canola oil is LEAR (Low Erucic Acid Rapeseed) oil.
Your confusion about canola oil's safety is understandable. While the Internet can be a great source of information, many rumors and urban legends have circulated on web sites and been passed along in e-mails. Urban legends usually warn of dire consequences from something perfectly innocent; they often relate a story about someone who had such a terrible experience with something, yet that person almost always remains anonymous. These often frightening stories or accusations usually lack enough detail to make scientific, logical evaluation of the claim. The scare tactics of canola oil fit into this scenario.
Some of the information circulating on the Internet states that canola oil causes endless maladies: joint pain, swelling, gum disease, constipation, hearing loss, heart disease, hair loss... the list goes on and on. Canola oil has undergone years of extensive testing to assure its safety. In truth, canola oil contains essential fatty acids that our bodies need and cannot make on their own. Over 90 percent of the fatty acids present is the long chain unsaturated variety that has been proven beneficial to health.
It has also been claimed that canola oil is used in making mustard gas, a poison. This is totally untrue. Actually, mustard gas doesn't even come from the mustard plant; it was so named because it smells similar to mustard. Canola oil has allegedly been used as an industrial lubricant and ingredient in fuels, soaps, paints, etc. The truth is that many vegetable oils, such as corn, soybean, and flax, are also used in these applications. That doesn't make those oils unhealthy or dangerous. Canola oil has also been accused of killing insects, such as aphids. Again, all other oils can do the same, not by poisoning insects, but by suffocating them.
In China, rapeseed oil cooked at very high temperatures was found to give off toxic emissions. In the U.S., the combination of refined oils, added antioxidants, and lower cooking temperatures prevents this from occurring. In China, the oil contains contaminants, is not refined, and has no antioxidants. Some people have blamed the Canadians for paying the United States government to have canola oil added to its GRAS (Generally Recognized As Safe) list. There is absolutely no evidence of this.
As you can see, misinformation can be used to scare people. Good thing you knew where to turn! For more information on canola oil, you can check out the Canola Council of Canada web site.
Your coach and captains may not be correct. Several studies, under various conditions, suggest that consuming caffeine prior to physical activity has no additional effect on sweat rates, total body water loss, or negative effect on athletic performance as compared to non-caffeinated products — and it may provide a boost for you out on the soccer field!
Caffeine has been considered an ergogenic aid — a drug that increases performance as a result of the physiological effects it has on the body. While the exact mechanism isn't known for sure, some researchers believe that caffeine stimulates earlier and greater fat burning during exercise. This would help preserve the body's store of glycogen (the fuel muscles use) so that a person could exercise longer before feeling exhausted. This theory supports findings that caffeine improves performance in endurance events, such as long distance running and/or cycling. A review of literature on the effects of caffeine in short-term and high-intensity exercise concludes that the substance may also aid athletes’ performance in team sport activities that requires repetitive sprinting (like soccer) if ingested before the activity. Others believe that the stimulant effect of caffeine may help with alertness, mental clarity, and overall mood, all of which could help during a workout. For more information, check out Energy drinks and weight loss from the Go Ask Alice! archives.
However, caffeine can affect people in different ways. While some people might notice a performance boost, others might suffer from dizziness, headaches, loss of coordination, abdominal cramps, or nausea — definitely not desirable on game day. Caffeine can also interfere with sleep patterns; overuse might mean that you're not well-rested enough when it comes time to play.
Do you notice that you experience some of these issues when you add caffeine to your diet? If so, you might want to opt out and focus your efforts on proper training, rest, and nutrition for optimal performance. If you don’t, you can rest assured that caffeine does not seem to cause excessive dehydration (though make sure to drink plenty of water and other non-caffeinated drinks, too) and may actually be of benefit when you’re on the field!
Vegetables can be a wonderful source of vitamins, minerals, and other nutrients that people need to stay healthy. The problem is that preparation can put a damper on the benefits that vegetables provide. In fact, according to the American Dietetic Association (ADA), improper preparation can cut the nutrient content of certain fruits and vegetables in half.
When cooking vegetables in water, some of the nutrient content, especially water-soluble vitamins including vitamins B and C, may leach into the surrounding water. But, as you suggest, using that water (or broth) in a soup or a gravy can, in fact, be a way of saving those nutrients and putting them to good use.
Still, high temperatures and long cooking times can degrade vitamins that are more sensitive to heat. While this is hard to avoid with soups, it is much less of a concern than leached and wasted vitamins.
If you're planning on preparing vegetables to eat alone, you may want to try steaming them briefly until they are crisp and tender. It's almost always best to keep cooking times low: microwaving, steaming, blanching, and stir-frying take the cake when it comes to speed. Also, you may want to eat your veggies raw; salads and crudité are a great way to enjoy fresh vegetables and their full range of nutrients. Generally, the less cooked the better — overcooked vegetables don't only lose nutritional content, they also lose much of their flavor and color. This doesn't mean you should stop adding vegetables to your soup. The ADA recommends that you consume at least 3 to 5 servings of vegetables every day, so it may be a good idea to vary your preparation on a daily basis. Bon apetite!
Lactobacillus acidophilus is bacteria, not the pathogenic type that causes illness, but actually one of several kinds of beneficial bacteria called probiotics. These helpful bacteria are normally found in the intestine and the vagina. They are also naturally available in cultured or fermented dairy products, such as yogurt that contain live active cultures and acidophilus milk. Probiotics are also sold as nutritional supplements. Since the U.S. Food and Drug Administration (FDA) does not regulate dietary supplements, the presence and/or amount of live active cultures in supplements is not guaranteed.
Probiotics appear to offer various health benefits. They create a more acidic environment in the intestine and vagina, which helps keep harmful bacterial growth in check. This natural balance can be disrupted, however, by antibiotic use and illness. In these cases, the bad bacteria proliferate, usually causing conditions such as diarrhea or vaginal infections. Taking probiotics may help reduce the symptoms of diarrhea and treat vaginal infections.
Other possible benefits include enhancement of the immune system, helping the digestion process, production of antimicrobial substances, and protection against certain chronic illnesses, such as cancer, among other possibilities. However, more research is needed to definitively demonstrate that probiotics have these favorable actions.
To answer your question: There has been some research to suggest that L. acidophilus (commonly combined with another probiotic) may reduce the risk and/or duration of of some cases of diarrhea if used as a preventative measure. More specifically, a few studies have shown that the use of this probiotic has reduced the risk and incidence of diarrhea associated with antibiotic use and chemotherapy. In another study, a combination of probiotics that included L. acidophilus resulted in a shorter duration of acute diarrhea in children. While these findings are promising, there is currently no consensus on whether L. acidophilus alone or in combination with other probiotics would be effective for the prevention or treatment of traveler’s diarrhea.
Despite this research, if you are considering using L. acidophilus or other probiotics, consult your health care provider before doing so. Those who are pregnant or immune-compromised will need to determine whether or not it's medically safe to take probiotics. Adverse effects include gas and/or bloating, irritation, sensitivities or allergies, and interactions with over-the-counter or prescription drugs and/or other dietary supplements.
There are other remedies for diarrhea, including antidiarrheal and antimicrobial medicines, but these are not recommended in all cases. When the cause is food poisoning, it’s best to let the illness run its course. Antidiarrheals can delay the time it takes for food-borne microorganisms to leave the body.
Hope this helps!