4. According to George, one of the added benefits of building variety into your routine, is that it turns a regular workout schedule into cardiovascular crosstraining. By constantly trying new activities, you'll not only beat boredom, you'll also target a greater variety of muscle groups and see results even faster.

5. To make ab exercises work harder, George gives them a little something extra. For actress and new mom Reese Witherspoon, George recommended that she lift her legs in the air and cross them at the ankles to make her crunches even more effective.

6. Instead of plain old squats, George had actress/singer Jennifer Lopez do these "squat raises" to tone up her legs: With feet shoulder-width apart, bend knees slightly and lower your body until you're almost sitting. Rise back up and onto your toes. Do two sets of 25.

7. Part of the arm workout George designed for actress Jennifer Aniston is a move you may remember from gym class. To do basic arm circles, hold your arms out at shoulder level and do small circles for one minute in each direction. Do three sets.

8. George may be most famous for sculpting Meg Ryan's buff biceps. Here's how you can get yours into similar shape: Try 12 regular bicep curls with eight-pound weights, then do 12 side bicep curls with five-pound weights (keep your elbows against your rib cage, but turn your forearms out and lift to the side).