I'm 22, 5"9 183 lb. I stay up with my cardio, at least 20 mins a day but I've been having trouble losing that extra bf. it started off great but now it's slowing down and I'm losing barley anything now. My diet is good. I was thinking bouts doin clen so I tried ephedrine first to see how it would workout and have had nothing but headaches since I started takin it. I discontinued it a few days ago and guessing clen would just have the same effect . Thinking about trying a fat burner but I was wondering what product would work great to get rid of unwanted bf and keep muscle size ?