So I purchased from SARMS1. I bought a cutting stack of cardarine and S4 (now I understand the GW-501516 isn't 'really' a SARM) for the purpose of cutting while being able to improve my VO2max and overall cardiac threshold, ostarine reddit 2018. It was probably about two weeks into the cycle that I started to notice my runs and swims were getting faster and easier with less effort esp'ly when I was doing these in the extreme heat of Key West, FL. I really didn't notice any great anabolic benefit from the S4 but I continued to keep them stacked together. I stayed with the recommend dosage (which was about a dropper full-there really wasn't any graduated markings).The negatives were the side effects of too much MK677 by far, ostarine reddit 2018.