You're absolutely right. It does do that. It's a very strong anti-oxidant, which comes in handy especially on a cutting diet where calories are restricted. It also helps metabolize protein to be used to re-build muscle, which again is very helpful pre-contest or any time for that matter. On a cutting diet, you can't take in too many calories per day if you're counting calories, so any help with metabolizing the few calories that you are getting is much needed.