Planks work your entire core and with an extra twist you'll be targeting your side body, too, improving your body weight to body strength ratio. Make sure to breathe nice and steady, and keep your body in a straight line as you twist.
- Start on your hands and toes with your body in a straight line from shoulder to hips.
- Twist to your right, raising your left hand to the ceiling
- Return to starting position and repeat on your left side.
- Continue for 30-45 seconds alternating sides.
- To modify the plank, start on your knees and work up to being on your toes.