1. at that weight with that height you have zero business using any steroid
2. winstrol is not going to help endurance at all, more so hinder it... so thats a terrible choice on top of the fact you have zero business using any steroid to begin with
2. winstrol is not going to help endurance at all, more so hinder it... so thats a terrible choice on top of the fact you have zero business using any steroid to begin with