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.

Can You Survive on 500 Calories a Day?

Published Sep,01 2011 | By Karen Hellesvig-Gaskell

Some enthusiastic dieters may be tempted to seek out extreme weight loss plans to shed unwanted pounds as quickly as possible. Severe calorie restriction diets, such as the HCG method typically restrict dieters to 500 calories a day. Strict diets of fewer than 1,110 calories pose numerous health risks.