I bet Rapamycin will have the same effect as Metformin:
Metformin Decreases Aerobic Capacity, Muscle Mass and Testosterone
I have been on 2x1000mg a day but I lost my endurance(Kun Khmer/Muay Thai training) and workout capacity/volume. I had no common sides from it, no diarrea etc, but felt physically limited. A strange feeling of being limited by the amount of energy the body had stored or could generate on the...www.excelmale.com
In my experience that is not the case. Metformin definitely has a negative impact on my aerobic capacity, but not so with Rapamycin. If anything it makes me feel a bit more energetic. I was prescribed 6mg/week.