I've been on gear/hrt for about 10yrs. Added 15mg ostarine for 2weeks and noticed nothing. Bumped it to 20'ish and it's been maybe 10days and I still literally feel nothing. It's legit to as its from superior. I'm just cruising with around 350mg test. Added a very small dose of tren ace 10mg(yes ten) subQ EOD the past week and I can actually feel that more than the Ost. I think Ost is better for natural guys or those who haven't used a lot of aas in the past because it's hard to really compare or notice it. I'm just staying on 15mg now till the bottle runs out for the heck of it.