I am considering using steriods for running i have some knowledge,but i would like some advice on which ones i should use to help run. I would like to gain more endurance, speed and strenght but not much mass. I run about 6 miles a day if that helps any.. i work out 2 to 3 times a week too.i am 18 and runnnin for competition in hs.i want to be able to push it furhter than i am right now thanks