WEll, I hit it right after the gym. 30mcg in each muscle worked (right then left) and don't bother with am inj. I makes more sense to me that way. The compound is not that stable once injected, think the half life is like 12 hrs. So since you will start the majority of your repair after you workout, I would want it in getting into my system at that time, there fore its there to aid repair when the compound is in full swing. With am injections if you don not work out till later then almost 1/2 of the compound is destroyed by the time it is needed most. Well at least that my personally take on it.