I love exercises that work multiple areas of my body. These kinds of moves are usually challenging so you never get bored doing them, and you can feel them working immediately so you're more apt to add them to your routine. This exercise will target your shoulders, waist, abs, and thighs. It's tough to balance at first, but once you start including this move in your strength-training sessions, you'll feel more stable and stronger. Then you can begin to add more reps.

To find out why two arm positions are pictured above, just read more.

• You can do this move two different ways, as I've shown above. Either place your left elbow on the ground, or to make it more difficult, place your left hand on the floor.
• Now straighten both legs out so that your body is in one straight line, and you're balancing on the outside edge of your left foot. Flex both feet if you can and rest your right hand on your hip.
• Keeping your spine lengthened and your abs engaged, lift your right leg up as high as you can. Then slowly lower it back to your bottom leg.
• Do two sets of 20 repetitions on each side.