Barbie
  • Member for 10 years, 10 months
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When will muscle be cannibalized?
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67 votes

To make a long story short: you will start burning muscle when you run out of carbs and dietary protein. Also, your body will only keep as much protein in the muscles as it has to: if you're not ...

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How long should you avoid eating before running a 5K?
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32 votes

The main problem with eating before running is nausea and burping up your breakfast during your race. Once the food moves from the stomach to the small intestine, most people are fine (some people ...

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What's the difference between calories and kcal
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25 votes

One calorie (with a lower case c) is the amount of energy required to heat 1 gram of water by 1°C. A kilocalorie is 1000 calories, and Calorie (with a capital C) and kilocalorie (Kcal) are synonyms. ...

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Does muscle really "turn into" fat?
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18 votes

The top hits on a Google search will tell you definitively: no, muscle does not turn into fat. It's sort of true, but it's not that simple. Your muscle is always being broken down and built back up, ...

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Is it true that Diet is far more effective than Exercise for fat loss?
17 votes

If you compare the number of calories you can burn per hour exercising to the calories you can consume per hour eating, eating definitely wins out. It's so easy to "undo" the weight-loss benefits of ...

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Toes Hurt and Go Numb While Running
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14 votes

It sounds like metatarsalgia to me. If you check out the symptoms section that article they match what you described. Running and jumping increase the risk of metatarsalgia, and anything that ...

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Carbohydrates prior to running
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14 votes

"Hitting the wall" isn't so much a plateau as "precipitous fatigue and loss of energy" (Wikipedia). It happens when you run out of glycogen (the storage for of carbohydrate in your body). When I was ...

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Why do my legs hurt while jumping rope?
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14 votes

It sounds like you've got a few things going on here, and I would suggest seeing a physiotherapist to get a personalized assessment and treatment prescription. What I'll say here is only a guess, so ...

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Is it true that thinking uses a lot of calories?
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13 votes

According to this article on Livestrong, your brain burns ~20% of your body's energy (pretty impressive, considering it only accounts for 2% of your body weight). Here's a more acedemic source to ...

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Can vinegar cause fat loss?
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13 votes

I'd never heard of this before, but I did find other studies to back it up. This study from 2005 found that vinegar (and peanuts, if you're interested) decreases glycemic load (i.e. it slows down the ...

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What are BCAAs, and what are they used for?
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12 votes

BCAA stands for branched-chain amino acids. According to this article, from the Journal of Nutrition: BCAAs (leucine, isoleucine, and valine), particularly leucine, have anabolic effects on ...

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How accurate is the Navy Body Fat Calculator?
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12 votes

According to WikiHow, the Navy's Body Fat calculation formulas are as follows (measurements in cm): men: %Fat = 86.010*LOG(abdomen - neck) - 70.041*LOG(height) + 30.30 women: %Fat = 163.205*...

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Pain in the top of my foot
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12 votes

If you could go below all the fascia and muscle in that picture, you could see the ligaments that connect the bones: The anterior talofibular ligament lies in the area you point to in your image. ...

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Using a rowing machine for abdominal muscles
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10 votes

When you row, you do trunk and hip flexion, which are the ab-targeting motions of a sit-up; however, the resistance is in the opposite direction as in a sit-up. This means that you'll actually target ...

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Chronic back pain after deadlift injury
8 votes

Summit Medical Group has some great rehabilitation resources. Here are some strengthening and stretching exercises they recommend for people with low back pain. On the page linked above, they also ...

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Any benefits to doing really low or really high number of reps per set?
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8 votes

Based on this position statement from the American College of Sports Medicine, the answer to both questions is yes. According to the ACSM, sets of 15-25 reps (using light loads) are most effective ...

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Is Creatine Loading necessary?
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8 votes

Got my hands on the full text of this article, and based on a study that compared different creatine dosing strategies, the author came to the following conclusion: if you are seeking a fairly ...

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Following the Glycemic Indexes theory?
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8 votes

Glycemic index refers to the rate at which foods increase blood sugar levels. Foods with a high glycemic index increase blood sugar levels quickly, and those with a low glycemic index increase blood ...

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Quinoa: red or white, which is healthier?
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8 votes

Here are the nutrition facts of red and white quinoa from the same company. The main differences I can see are that red quinoa is slightly lower in total fat, marginally higher in sodium, fiber, sugar,...

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What are the nutritional benefits of saturated fats?
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7 votes

Saturated fat is essential for the body to function properly, but that doesn't mean you need to eat it. It is well-established that for most people, the only two fatty acids that are essential in the ...

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What is a good way to estimate percentage of body fat?
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7 votes

This website covers all the methods for accurate body fat measurement that I know of (well, besides autopsy, but I doubt you want to do that). The most accurate ones require expensive sophisticated ...

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How magical is Grapefruit Juice?
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6 votes

According to this article from the British Journal of Clinical Pharmacology, grapefruit juice prolongs the systemic elimination half-life of caffeine, i.e. the caffeine stays in your system for longer....

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Probiotics: differences between bacterial strains
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6 votes

Wow, what a research project. I found a couple review papers on probiotics (PDF1, PDF2) that summarized the functions of the Lactobacillus and one of the Bifidobacterium strains you listed. A lot of ...

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How many calories are burned while doing interval running?
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6 votes

For a decent estimate, figure out the total number of minutes you spent walking and the total amount you spent running, and multiply each by the appropriate number of Calories/minute (Here is a site ...

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What are the biological processes behind the sensation of "being hungry"?
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6 votes

Hunger is the physiological drive to eat, influenced by hormones, nutrient levels in the body, and eating patterns. Scientists differentiate this from appetite, which is the psychological drive to eat....

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Should I train all muscles or concentrate on some muscles in each session?
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5 votes

According to the ACE Personal Training Manual (American Council on Exercise (2003). ACE Personal Trainer Manual (3rd ed.). San Diego, CA: American Council on Exercise.): Because the muscle ...

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Ice in protein shake
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5 votes

Adding ice to a protein shake could temporarily change the state of certain fats (i.e. from liquid to solid), but this does not change how hard it is to burn off the fat once it's in your body. ...

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How do I avoid calf and knee pain after a weekend of tennis?
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5 votes

Since you work so much longer and harder than usual at tournaments, it's not surprising that you're feeling some soreness (see this Wikipedia article on delayed onset muscle soreness for more info), ...

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Proper way to do the Dead Bug
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5 votes

Dead bug is a dynamic lumbar (low back) stabilizing exercise, which means the main goal is to keep the spine neutral despite shifts in torque caused by the big arm and leg movements. Sending the ...

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Does the existence of trans fat invalidate years of research on saturated fats?
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5 votes

Trans fat only occurs naturally in a few food sources, and at very low levels (Health Canada). If a food is high in trans fat, the trans fat there on purpose (e.g. processed foods use trans fats to ...

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