You can add another SARM mid cycle but I like them better stacked together at the same time. I would run a typical SARMs stack for 12-16 weeks and then use the natural test booster HCGenerate ES as a PCT. If you were using really strong SARMs in your stack like RAD, LGD, S23 together I might add a low dose clomid. Something like 12.5mg EOD for 4 weeks with the HCGenerate ES.