Calculate your "Body Mass Requirement"
This tool will calculate your daily calorie expenditure based on the BMR - it is based on the article "Eat and Run: Your Program for the 10k and Half Marathon" and the related BMR formula appearing in the Impact Magazine March/April 2007 issue.

Gender:	Female Male
Weight:	pounds
Height:	feet   inches
Age:	years
Activity Level:	Sedentary (little or very little exercise) Light activity for average of 2 days/week Moderate activity level; exercising four days/week High activity levels; exercise and sports more than 4-6 days/week Higher activity levels