I dont know about that bro.......I like what it says about the OSTA, but if you look around here at some of the logs, what he says about weight in comparison to your dosage of S4 doesnt really hold true, at least as far as side effects go.
I ran at 50mgs for 7 days on and 0 days off for 60 days (if I remember correctly) and didnt even get minor sides until day 58. (185lbs 7.5% BF) On the other hand, I've seen logs of 220+ pound guys having to go 5 on and 2 off at the same dosage, as well as seeing lighter guys running 75 mgs and not seeing great results.
I think your first bottle of SARMS, for me at least, is really just a test to see what your body needs in the future with it. You've got to go with what works for you.