As far as the clen I take 4 pills starting 1 month out not includeing the time for carbing up 2 in the morning and 2 afternoon. 2 days on 1 off. clen is hard on your receptors that is why I only use it for a month.I know clen has a long 1/2 life but this what works for me.As far as yohimbe burn no idea , never used it proberly never will. it will work well with fina, but I hope your thinking of takeing other anabolics also?