For most people, having great abdominal muscles is about looking great on the beach.
But for those of us who are serious sports people, it's about strengthening our core - and that in turn affects everything we do, from ridiing bikes to running, swimming and training generally.
We looked around the net to find a really solid abs workout, that was easy to do and required no equipment.
Do this a couple of times a week, and see how fast you improve your core strength!
Of course, what really helps with the burn is using booost canned oxygen during these exercises, so order yours here: Sports Oxygen