Hi Kris. I'm 52 and am just finishing up with my very first cycle. I'm running Finaflex 1Andro/550XD PH with a PCT of Revolution. This has been very easy on my system with expected sides. So far I've put on a little over 14 lbs of lean muscle. I'm not a rep or affiliated with Finaflex I'm just a very satisfied customer. Look in the Redefine Finaflex section it will answer all your questions.