Exercise Ball Pull-in

A strong core helps with more than appearance; it protects the spine and promotes proper posture as you participate in daily activities. Try one of our 5 best abdominal exercises to help strengthen your core (or do them all to really feel that burn). Exercise Ball Pull-in a. Begin in a plank position with feet on a large stability ball in a push-up position. Keep back straight. b. Pull knees in towards chest. Hold for one second. c. Return to starting position by straightening your legs. d. Repeat 10 – 15 times.