08/25/2026
You’re losing muscle right now. If you’re over 40, it’s accelerating.
Sarcopenia is an age-related muscle loss condition, but isn’t cosmetic. Muscle is:
- Your resting metabolic rate driver
- A glucose sink (pulls blood sugar into cells)
- Joint protection
- Fall prevention
- The difference between independence and dependence at 80
2025 research:
- Only resistance training activates satellite cells and drives protein synthesis
- Prescription: 60-80% 1RM, 2-3x/week, 8-12 weeks
- Outcomes: 30-60% strength gains, ~1.1 kg lean mass increase
- Aerobic exercise alone CANNOT prevent sarcopenia
And here’s the connection to Eat (Episode 193): men over 40 need ~30g protein per meal to trigger muscle protein synthesis. But protein without a stimulus doesn’t build muscle.
Eat provides the substrate. Move provides the signal. They work as a system.
This isn’t about getting jacked. It’s about getting off the floor at 75.