Key takeaways
- Building muscle after 40 is very achievable — the principles don't change, the margins do.
- Older adults often need slightly more protein per kg to overcome 'anabolic resistance'.
- Resistance training 2–3× a week fights sarcopenia (age-related muscle loss) and protects metabolism and independence.
- Prioritise recovery, warm-ups and joint-friendly exercise selection; progress is steadier but real.
Age is not the barrier most people assume. You can build real muscle after 40 — the principles are the same, but a few margins shift and reward a smarter approach.
What actually changes with age
Three things to plan around:
- Recovery slows — you bounce back from hard sessions a little slower.
- Sarcopenia — without training, adults lose muscle steadily from around the 4th decade. Resistance training reverses much of this.
- Anabolic resistance — muscle becomes a little less responsive to protein and training, so the inputs matter more.
None of these stops you growing. They just mean recovery and nutrition earn more attention.
How to train
- Strength train 2–3 times a week, covering the main movement patterns.
- Apply progressive overload, but leave a rep or two in reserve more often — quality over grinding.
- Warm up thoroughly and choose joint-friendly variations where needed.
Protein matters even more
To overcome anabolic resistance, aim for the higher end of 1.6–2.2 g/kg, spread across the day. Calculate your target below.
Protein Calculator
About 44–59 g per meal across 3–4 meals.
Recover like it's part of training
Sleep, stress and rest days aren't optional after 40 — they're where the adaptation happens. Manage them and progress compounds.
This is exactly the kind of individualisation our coaching is built for: the muscle-growth and elite general health programmes scale training and recovery to your age, history and data.
Sources & further reading
- Protein recommendations for older adults — PROT-AGE Study Group (Bauer et al., 2013) — JAMDA / PubMed
- Physical activity guidelines for older adults — NHS
- Resistance training & sarcopenia (research overview) — NSCA
Citations are provided for transparency. This is general information, not medical advice — always consult a qualified professional about your own circumstances.