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.

The Effects of Consuming Fewer Than 1000 Calories Daily

Published Jul,08 2011 | By Stephen Harding

Foods vary in the number of calories they contain, just as the number of calories an individual needs just to carry out daily functions can also vary. According to the National Heart, Lung and Blood Institute, women should not fall below 1,000 calories per day, and men should not fall below 1,200 per day while dieting.

Stephen Harding has been writing since 2009, with work on eHow and LIVESTRONG.COM. A U.S. Marine captain, he has military, operations and leadership experience. He holds a Bachelor of Business Administration in marketing from the University of Central Arkansas, is a Six Sigma Green Belt and a Development Dimensions International Targeted Selection Interviewer. He is completing an MBA at the University of Iowa.