Last updated: May 07, 2008
Believe it: This 20-minute full-body routine from Contributing Editor Petra Kolber—with six- and nine-month fitness boosts—is the only workout you'll ever need. Just repeat two or three times a week and combine these moves with 30 minutes of cardio, three times a week.


Lateral Lunge With Biceps Curl
Hip Hinge With Triceps Extension
Figure Eights
Lunge With Overhead Press
Prone Leg Raise With Ball