No particular order, just ideas from experience. Recovery - Overtraining — add rest days; hard session = more rest - CNS fatigue — do a deload; 50% intensity or even 50% volume if it feels rough - Sleep — no mid-sleep wake ups / quiet, dark, chill room / 8-9h optimal - Avoid doing any physical stuff same day or 1-2 days before an important workout — or move training schedule 1-2 days forward Nutrition - Calories, protein, carbs — take it seriously, hit daily macros - Pre-workout meal — 0.5-1h before: banana, honey, etc for quick fuel / add nuts if train over 1h - Hydration — 0.5L 1h before / also drink between sets (muscles are 80% water btw) - Living in hot climate = drink more water - Any amount of alcohol the night before — f*cks you up real good Training - Proper form — engage correct muscles (check youtube or ai) - Not tracking progress — just use notes app; write down every rep, second, equipment, etc - No progressive overload — up the weights, intensity / "slow-explosive": for ex on pullup go up explosive and down slow - Undertraining — do it more often, drive more adaptation - Warm-up quality/duration — skipping/lacking = less performance & more injuries; overdoing warmup = less fuel in the tank for working sets - You are only as strong as your weakest link — isolation exercises at the end of session - Exercise variety — drive new adaptation; for ex alter pullups & chinups Health - Illness early symptoms — prioritise rest; working out weakens immune system = will be ill longer; only super-light muscle activations allowed - Injuries happen often — might not be obvious; reflect why & fix for good Environment - Training at different time of day / different equipment / different setup — body re-learns movement - Hot room / too hot outside — overheating is the primary cause of failure, so if gym is hot you will hit the limit faster (muscles will literally get cooked, so the body shuts them down) - Very cold room / cold outside — body is cold = poor performance & recipe for injury - Altitude changes — oxygen works differently - Worn-out / degraded equipment