I don't know about alot of guys. Like I said, Couture used it and that speaks for something, imo.
I wouldn't be surprised if guys like Takanori Gomi were using it. The Japanese guys in lower weight classes seem to have this incredible speed and cardio about them.
What you're starting to feel the effects of is what Ong mentioned. That's the anti-oxidants cleaning out your system. Its amazing how much healthier you feel, you weren't completely aware that you didn't feel healthy before.
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