The familiar 10% rule is easy to remember, but it is not a guarantee of safety. A better progression considers what changed, how hard it felt, and how your body responded.
Track duration and effort
After each run, record minutes and a 1–10 effort score. Multiplying the two creates a simple effort-minute load. It is not a medical metric, but it makes abrupt changes easier to see.
Change one major variable at a time
Avoid increasing long-run duration, speed work, hills and weekly frequency in the same week. Hold the other variables steady while your body adapts to the new stimulus.
Respect intensity
Twenty hard minutes can create more fatigue than a longer easy run. Keep most running conversational and introduce harder sessions only after a consistent base.
Use symptoms as feedback
Stable mild soreness that settles can be normal. Worsening pain, altered walking, major swelling, neurological symptoms or pain that persists despite reduced load needs professional assessment.
A practical progression
Build for two or three weeks, then hold or slightly reduce load for a week. Returning runners may need smaller steps and longer holds. Your recent consistency matters more than an arbitrary percentage.
Pair load management with the running warm-up routine, the drill library and the injury-prevention hub.