FAB FIGURE: Jennifer Lopez
CELEB TRAINER: Gunnar Peterson
SMART TIPS:
10. Quit quick-stepping on the stairclimber! This works fewer muscles and burns fewer calories than long, deep steps.
11. Sit still for no more than three minutes between weight-lifting sets. Waiting longer allows your muscles to cool down, weakening the benefits of the exercise.
12. MUST-DO MOVE: Tricep extension
TARGETS: The backs of the arms
HOW TO DO IT: Hold one end of a five-to-eight-pound dumbbell in both hands above your head. Slowly lower the weight behind your head so elbows point to the ceiling, then lift. Aim for three sets of eight.
BOOK: G-Force: The Ultimate Guide to Your Best Body Ever






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