This Trainer's 6-Move Ab Workout For a Stronger Core Takes Just 10 Minutes

• Lying on your back with your arms out beside you, engage your core and extend your legs out, a few inches off the floor.
• Tuck your knees to your chest and roll up to extend your legs to the ceiling, or as high as you can go.
• Lower your hips back to the floor into a tucked position and return to your starting position with your feet extended out straight off the floor.
• This counts as one rep. Do 12 reps.

Alternate move: reverse crunch