Developed through research with some of the world's leading weight lifters and military organizations, Harley Pasternak's fitness and meal plan has been used by Hollywood's biggest celebrities to stay in shape and still have a life.

5-Factor Fitness presents Pasternak's regimen-alternating strength training and aerobics-that lets dieters eat more, work out less, and achieve results in just 5 weeks:

- Work out 5 days a week-at home or at the gym, for only 25 minutes a day, to lose fat, gain lean muscle and increase energy - Eat 5 meals a day to boost metabolism and reduce body fat - Follow 5 simple criteria for each meal, and spend only 5 minutes preparing each one - Indulge in a weekly cheat day: one day a week to satisfy cravings and eat favorite foods