How to do it: Lie face up. Hold dumbbell in right hand over shoulder, arm straight. Extend left arm overhead, biceps by ear. Lift head, neck, shoulders, and legs a few inches off floor. Use legs to ...

Minute Mobility Routine" includes simple exercises that are immensely beneficial in making you feel fit and flexible.

You'll need more than just crunches to build a strong, functional core. Try these moves to upgrade your workouts.