5 Moves to Work Your Core, Tone Your Middle, and Create Sleek Abs

This exercise teaches shoulder stabilization and is great for everyone, from swimmers to anyone who spends a lot of time at a computer.

Level: Beginner

• Lie face down with your arms above your head with hands wider than your shoulders, making the shape of a Y with your torso. Your thumbs are up.
• Pulling your abs toward your spine (without changing the shape of your spine), slide your shoulder blades toward your spine and lift your arms three to five inches off the ground. Hold for two seconds, then lower your arms to starting position. This completes one rep.
• Do two sets of six reps.

Works: Upper back, shoulders, shoulder stabilizers