Hey Dev. Nice detail given⦠First, overall context. Youāre cutting hard from a higher body fat, using retatrutide, and stacking multiple compounds that all tax recovery in different ways. In my opinion, the fatigue youāre feeling is not unusual at all. Itās almost always the calorie deficit plus the GLP drug plus high training stress. No stack fully cancels that out. On YK-11. Honestly, if Iām being blunt, YK-11 looks better on paper than it feels in real use at least for me and others I have engaged with. Even injected, Iāve seen it cause joint and tendon discomfort, flat energy, and a that heavy systemic fatigue. The myostatin angle sounds great, but in practice I donāt see a huge muscle-saving payoff, especially on a cut. Your dosing isnāt crazy, but if this were me, YK-11 would be the first thing Iād question or remove rather than push harder. On fatigue support. I wouldnāt spend money on SS-31 or MOTS-c expecting a big turnaround. In my experience, theyāre expensive and subtle at best.. If fatigue is bad, Iād first look at carbs around training, sleep quality, and stimulant use. DMAA can help you perform for an hour, but it often worsens next-day fatigue. MK-677 helps sleep for some, but for others it adds grogginess. For me personally I take mk677 in the morning on an empty stomach and let the nighttime normal natural GH pulses happen during the night. But understandably that wont help with hunger and possible day time fatigue(although i still think thats more from the YK) Enclomiphene can also contribute to lowgrade tiredness. Iād simplify before adding more. On training intensity, this is the key part. I agree that you need a strong keep this muscle signal, but I donāt think living at RPE 9ā9.5 on a cut is smart. What Iād do is keep one heavy top set on big lifts around RPE 8, occasionally touching 9, then slash back off volume hard. Thatās where most fatigue really comes from. in the 7ā8 range makes sense. The compounds donāt protect your nervous system or joints, so pushing near-max effort every session usually backfires after a few weeks.