Equipment: Light and medium weights

Good for: Upper body and core

Instructions: Complete 10 reps of each exercise, then immediately move to the next one. Once youve completed all five moves, repeat the full circuit from the time a second time through.

Plank Triceps Kick Back

How to: Get into a high-plank position with your feet slightly wider than shoulders. Hold a dumbbell in your right hand, elbow bent until your tricep is in line with your torso. Extend your arm back, until its completely straight. Then return to start. Thats one rep. Complete 10. (Switch arms for the second set.)