Sedentary, over sized people rationalize eating many thousands of calories every day. The thinking is "I'm a big guy, and thus I need more food to properly feed the inner man." This is not so. Most of this weight is fat, and unlike muscle is not metabolically active tissue. Fat does not contribute to burning off fat, but muscle does.
A lighter more fit person with more muscle and not too much stored fat requires more calories than an under-exercised, fatter, less muscular person. So we see that the opposite is true, the fit person needs more calories.
Should the sedentary person make a life changing decision to exercise, he will find that the exercising muscles burn calories, this eventually creates more muscle. The harder he works, the greater the energy expended during exercise, the greater the reduction of fat. Body fat is reduced by limiting calories, and performing aerobic exercise and weight training or body weight exercises. Calories will be burned, muscle will be maintained or built, and more muscle means less fat. Aerobic exercise is rhythmical, non-tensive exercise. Jogging, fast walking, swimming, bicycling are examples of this. Body weight exercises and weight training maintain or increase muscles. This type of exercise may be perfomed rapidly, providing some aerobic benefit. An example of this would be the P90X program.
A pound of fat has 3,500 kilocalories, so a daily reduction of food intake of 200 to 500 kilocalories will yield one to two pounds of weight loss per week. A kilocalorie is the large Calorie written with the large C.
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