I'm athletic and active but nothing seems to work. Sometimes we have to change our routine around to get our muscles to respond to the workloads we place on them. If you've been using the same ab routine for a while, it's time to modify it, iwazcrzy. If you don't have any lower back problems, you can try some of the more strenuous abdominal exercises. Some of these exercises you'll be able to do on your own, some require a medicine ball, and some a partner or a trainer.
Misery loves company, so teaming up with some one to train abs is a perfect solution.
Lie on a bench . Reach over your head and hold onto the bench. Raise both legs in the air until your toes point at the ceiling. Keep both knees slightly bent. Raise and lower your hips, keeping them from touching the bench.