05/04/2019
📍Space
Muscle is denser than fat, which means it takes up less space than fat. While you may have heard that muscle takes up one-third the space of fat, the truth is a bit less dramatic. Muscle takes up approximately four-fifths as much space. Two people may be the same height and weight, but the person with a higher body fat percentage will wear a larger clothing size.
📍Weight
Since it is denser, muscle does weigh more than fat if you compare same-size portions. On average, the density of fat is 0.9 g/mL. The density of muscle is 1.1 g/mL. Using the averages, 1 liter of muscle weighs 1.06 kg, or 2.3 lbs., while 1 liter of fat weighs .9 kg, or 1.98 lbs. This may vary due to numerous factors including race, being extremely lean, or being extremely obese, according to "Exercise Physiology" by William D. McArdle, et al.
📍Metabolism
Common gym lore says that 1 lb. resting muscle will burn 30 to 50 calories daily compared to fat, which burns no calories. The truth is that muscle tissue will burn seven to 10 calories daily per pound. Fat burns two to three calories daily per pound. Replacing a pound of fat with a muscle, therefore, helps you burn an additional four to six more calories each day, says Cedric X. Bryant, chief science officer for the American Council on Exercise. If you utilize a strength training regimen, you can expect to gain 3 to 5 lbs. of muscle mass in three to four months, bringing your net caloric effect to 15 to 30 calories per day. The best way to benefit from the calorie-burning potential of your muscles is to actually use them. Your basal metabolic rate, or the number of calories your body uses when you are at rest, typically accounts for 60 to 75 percent of the calories you burn in a day.................
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