6 Weeks to Sexy Abs - Week 4 Videos at Fitness Magazine

Leg-Step Extension

You'll need a step bench. This targets your glutes, hips, hamstrings, chest, arms, and core. Do 10 reps on each leg.

Half Boat

Do 4-5 more reps over the course of 1 minute.

Hair Wash Torso Twists

Work your deep abdominal muscles with this twisting move.

Ballet Twist

This move targets your obliques, six-pack, and deep abs. Do two sets of 6 to 8 reps per side.