Can you take clen for more than 2 weeks? I've read that it becomes less effective after 2 weeks because it deregulates the receptor, but at the same time, I've also read that if it is taken for longer than 2 weeks it becomes more effective... what do you guys think? and Please don't put some long article on here about the horses with clen and exercise vs. horses with clen and without exercise, because i've already read it. thanks.