Clen wont help you keep muscle bud, that's bro science.
It was found to be anti catabolic in cows at doses that would kill a man, it's anti catabolic wth them as they have a hell of a lot more of these receptors that humans don't have so many of. So it doesn't really translate over to human use.
I'm no science buff, there's plenty of material out there though.
If you're serious about doing it i'd run 250mg of test and 50-75mcgmcg a day, you'll drop weight like nobody's business if you keep cals clean, eat plenty of protein, lift heavy and add in cardio. Catabolism should be kept at bay but you'd have top keep an eye on it if going above 50mcg.
Or if you aren't into AAS then run it at 50mcg but keep a good eye on yourself, you can always drop it if it's starts to eat away at the muscle... it wouldn't be my first choice though. I don't agree you need to taper up or down personally.
<message edited by Doink on 24 March 2011 20:13>