huh... thats a pretty stupid way to do things.. I mean y not just bridge with a HRT dose of test.. its more safe than what u are suggesting (I wouldnt suggest that either).. Also that short of a break u prolly wont respond well to another cycle..Clen has anti-catabolic/anabolic action and thats y it is used.. the usefulness of clen is argued by many. I like it in PCT... Basically what u are suggesting is almost the same as being on all the time.. 4 weeks off is not nearly enough off time (to probably normalize HPTA), if u are doing normal length cycles.