Targets abs, obliques
- Lie faceup on floor with arms extended behind head, knees bent 90 degrees with feet raised, shins parallel to floor.
- Crunch up and hold position throughout as you bring left arm forward to reach toward toes and extend left leg.
- Switch sides and repeat.
- Do 20 reps, alternating sides. Do 4 sets.
Originally published in FITNESS magazine, January 2012.
Watch the workout video