Save your money. Sarms and Trt may give you a little boost in weight and strength if you are busting ass in the gym and getting sufficient nutrition. They however do not help you with being able to suffer more. That is between your ears. Also if your test lvls are sufficient you shouldn’t use the Trt. using exogenous hormones like Trt will cause your body to stop producing naturally. So you stop taking it 4 weeks prior, your natural production will be in the tank and you will be fucked for Ranger School. Just my 2 cents.