Weightlifting: what’s working
Consensus fitness advice in the last 48 hours: train 3–4x weekly focusing on heavy compound lifts (squat, deadlift, press, pull) near failure for progressive overload — typical sets fall in the 6–12 rep range with 4–5 exercises per session and one weekly HIIT day [](https://x.com/i/status/2032969113828790403). Users also note a modest metabolic uptick (7–10%) from consistent progressive overload training, useful for body‑composition phases .
A large network meta-analysis in the British Journal of Sports Medicine compared) randomized trials across load, sets and frequency and concluded that total weekly volume and moderate rep ranges explain most hypertrophy differences, not a single “magic” rep count. The American College of Sports Medicine’s progression models recommend) training frequency scaled to experience: about 2–3 days/week for novices, 3–4 days/week for intermediates and 4–5 days/week for advanced lifters, a framework coaches use to balance stimulus and recovery. Meta-analyses and position papers advise) targeting multiple sets per exercise (commonly 3–6) and distributing 10–20+ weekly sets per muscle group—research shows greater weekly set volumes generally produce larger hypertrophy up to practical limits. A systematic review by Grgic and colleagues found) that stopping sets near momentary failure (leaving 0–2 reps in reserve) yields similar hypertrophy to training to absolute failure across most studies, informing emerging guidance on proximity-to-failure. Controlled trials tracking body composition report modest RMR gains from resistance programs: a 9‑month intervention produced ~5% average RMR increase in one European Journal of Clinical Nutrition trial reported), while shorter interventions of ~10 weeks have shown RMR rises near 7% alongside ~1.4 kg lean‑mass gains in some cohorts summarized). High‑intensity interval training (HIIT) improves cardiorespiratory markers even with low weekly frequency—an 8‑week study using one cycle‑ergometer HIIT session/week showed)—and large meta-analyses of HIIT (97 RCTs) report broad cardiometabolic benefits, though concurrent‑training interference tends to appear when endurance volume exceeds about three sessions/week or long session durations noted).
