Once-a-week HIT for over-40s.
After 40 the margin for error shrinks: recovery slows, tendons stiffen, sleep gets messier. The good news — the evidence says you need less training, not more. One short High Intensity set per muscle, once a week, is the most defensible bet.
Why training frequency drops after 40
Adults over 40 produce roughly 30% less testosterone and grow hormone than they did at 25, and connective-tissue turnover slows. The same training volume that built muscle at 25 now produces inflammation that lingers for a week. The protocol doesn't change — the recovery window does.
The protocol in 90 seconds
- 5 compound machines: chest press, pulldown, overhead press, seated row, leg press.
- One set each. 10-second lift, 10-second lower. To true muscular failure (~90 seconds).
- 12–18 minutes, end-to-end. Once a week. That's it.
What HRV-guided training adds
Intensiq syncs to Apple Health and Health Connect. When your heart-rate variability drops, the Recovery Brief pushes your next session by 1–2 days. When it climbs, it greenlights you. Sgouros et al. (2023) showed HRV-guided lifters added 12% more strength than fixed-schedule peers over 12 weeks.
What you'll feel in 6 weeks
- Weights climbing every week — auto-progression bumps load when you hit true failure.
- Tendons stop complaining (slow cadence removes joint shear).
- Sleep deeper, resting HR drops 3–6 bpm.
"It is not uncommon to see a doubling of strength in 6–12 weeks." — McGuff & Little, Body by Science, Ch. 11
The tracker is free, forever. Twelve minutes a week is all the protocol costs you.
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