We are so over crunches! So work your abs with these belly-flattening alternatives. This five-minute workout is loaded with seriously effective moves, including a killer plank circuit. You can do this workout on its own or after a cardio session.
Crossover Crunch with Reach: lift your upper back from the ground & curl to the right, extending arms & reaching across your body toward your right foot. Hold then return to start & do on opposite side, that's 1 rep. Repeat for reps.