Calorie Counting Guide: Intake for Muscle & Weight Loss

Determining how many calories you need depends on your fitness goals, whether you are a marathon runner or a weightlifter. Use intake formulas to calculate your needs for muscle gain or sustainable weight loss.

Woman on racing bike in countryside

How Many Calories Does the Body Naturally Burn Per Day?

The U.S. Department of Agriculture says a normal caloric burn is about 2,000 calories per day, but author and nutrition professor Marion Nestle reports it's more like 3,050 calories a day for the average man and 2,400 for the average woman.

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