bro, you are 140 lbs... i weighed that much in middle school... you clearly do not know how to properly diet, which is fine, you are here to learn but this is absurdity... you will wreck yourself using steroids that under sized... you have to get some more size or you are going to wreck yourself in terms of joints, ligaments, tendons, bones, etc... far too much strain being that undersized... you will grow too fast and with that small of a frame, its a bad idea man... you should be 25-30 lbs bigger and due to that, the amount of growth you have with steroids will be higher and it will crush you internally.. not to mention you are too young to use steroids... you can use sarms but you cannot use them until you learn how to eat man... what exactly do you eat each day?