I'd heard about this for years, but it turns out it really works. I smear it on my gut, then wrap myself with saran wrap before I get on the treadmill. The definition in my abs is much better now. Just thought I'd share. p.s. Don't get it online or at a sports shop. They'll call it a 'topical thermogenic' and charge you out the ass for it. Instead, go to Walgreens and look near the makeup. p.p.s. Also good for fapping.