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What is basal metabolic rate (BMR)?

Daphne Oz
Health Education
Your basal metabolic rate (BMR) is the number of calories your body burns daily without your having to do anything. Your body uses around 75 percent of the calories you eat each day just to maintain life and perform basic functions. You expend energy just to breathe, build new red and white blood cells, tone your muscles, pump blood throughout the body, think, raise or lower your body temperature -- even while you're sleeping. Any activity you do in addition to these natural functions also requires fuel in the form of calories. If you eat more calories than your body metabolism needs daily, you will gain weight. There are 3,500 calories in every pound of body fat. That means that if you eat 500 calories more per day than your body needs, you will gain one pound every week.
The Dorm Room Diet: The 10-Step Program for Creating a Healthy Lifestyle Plan That Really Works

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