Strength training from 40: why muscles are your longevity organ
From 40 onwards, without countermeasures, we lose noticeable muscle mass every decade. Why targeted strength training is one of the most powerful levers for a long, independent life.
Muscles are far more than aesthetics
Muscle is far more than an aesthetic detail: it is an active metabolic organ that buffers blood sugar, stabilises your joints and protects you from falls as you age. Staying strong means staying independent for longer – climbing stairs, carrying loads, getting up from the floor.
That is precisely why muscle strength is increasingly recognised in research as an independent health marker, closely linked to life expectancy.
What happens in the body from 40 onwards
From around the age of 30 to 40, the body slowly loses muscle mass without training – a process called sarcopenia, which accelerates with advancing age. Strength often declines even faster than mass.
A European expert consensus definition (EWGSOP2) therefore places muscle strength at the centre of the diagnosis, not just muscle quantity (Cruz-Jentoft et al., 2019). The good news: sarcopenia can be influenced at any age.
How to train effectively
Progressive overload is key: you gradually increase weight or repetitions over the weeks to give the muscle a stimulus to grow. Two to three sessions per week are enough for significant progress.
Focus on multi-joint compound exercises such as squats, deadlifts, presses and pulls – they train many muscles at once and are close to everyday movements. A position paper on resistance training for older adults confirms effectiveness and safety even beyond the age of 60 (Fragala et al., 2019).
Protein as building material
Strength training works best combined with sufficient protein intake. A large analysis shows that additional protein supplementation amplifies the strength and muscle gains from training (Morton et al., 2018).
A useful guideline is around 1.6 grams of protein per kilogram of body weight per day, ideally spread across several meals. An individual nutritional consultation costs from CHF 100 depending on the provider.
Starting safely
Learn the technique first – ideally with guidance – and only increase the load afterwards. This keeps you injury-free and builds on a sustainable foundation.
This content is general, evidence-based information and does not replace medical or physiotherapy advice. If you have pre-existing conditions, get a check-up before you start.
That was the snapshot. The app turns it into daily support.
Measure every day instead of calculating once: Vito or Vita puts your numbers in context, builds you a weekly plan and speaks up when something stands out.
Launching at the end of 2026 — iPhone first, Android to follow. Let me know when it’s out ↓
Sources
- Cruz-Jentoft AJ et al. Sarcopenia: revised European consensus on definition and diagnosis (EWGSOP2). Age and Ageing, 2019.
- Morton RW et al. A systematic review and meta-analysis of protein supplementation with resistance training. Br J Sports Med, 2018.
- Fragala MS et al. Resistance Training for Older Adults: Position Statement (NSCA). J Strength Cond Res, 2019.