5 Fitness Tips That Might Surprise You

According to celeb trainer Gunnar Peterson, the secret to awesome abs is "working consistently, working in different planes of motion, and adding weights to your abdominal work." Adding that extra resistance will help your body find that extra edge and make "easy" strength-training moves feel a lot tougher and more effective.

Challenge yourself with these ab exercises that utilize either a medicine ball or set of dumbbells for extra resistance.