Recovery and injury prevention
Sleep, daily steps, cardio, mobility, common gym injuries and how to prevent them, soreness vs injury and overtraining signs.
Muscle is built while you recover: aim for 7–9 hours of sleep, about 48 hours before training the same muscle hard again, and managed stress.
Sleep
- 7–9 hours a night. In a 2010 study of dieters, sleeping 5.5 hours instead of 8.5 hours cut fat loss by more than half and increased the loss of lean mass.
- Keep the same bed and wake times daily, a dark and cool room (around 16–19 °C), no screens or caffeine late, and a protein-containing evening meal.
Active recovery and mobility
- 7,000–10,000 steps a day supports health, fat loss and recovery.
- Cardio: 2–3 × 20–30 minutes of zone 2 (you can talk in sentences) per week supports heart health with little or no effect on muscle gain. Keep hard cardio away from leg day.
- 5–10 minutes of mobility on rest days: hips (90/90, couch stretch), upper back (open books), ankles (knee-to-wall), shoulders (band dislocates, dead hangs).
- Static stretching is best after training or separately. Short holds before lifting are fine, but a dynamic warm-up prepares you better.
Common injuries and prevention
| Area | Common cause | Prevention |
|---|---|---|
| Shoulder | Too much pressing, flared elbows, no rear-delt or rotator-cuff work | At least as many pulling sets as pushing sets, face pulls, external rotations, tucked elbows |
| Lower back | Rounded deadlifts, ego loading, weak core | Brace properly, controlled RDLs, back extensions, planks; belt for near-max lifts |
| Elbow | Heavy skull crushers, too much curling volume | Swap to cables or an EZ bar, warm up well, reduce load and keep reps higher |
| Knee | Caving knees, sudden volume jumps | Knees track over toes, increase load gradually, strengthen quads and glutes |
| Wrist | Bent-back wrists when pressing | Bar stacked over the forearm, wrist wraps for heavy pressing |
Soreness vs injury: muscle soreness (DOMS) is dull, peaks 24–72 hours after training and eases with movement. Pain that is sharp, in a joint, worse under load, or lasting over a week needs a break from that movement and assessment by a physiotherapist or doctor.
Overtraining warning signs: strength dropping for 2+ weeks, poor sleep, raised resting heart rate, low mood and motivation, constant aches. Fix: deload, eat more, sleep more.
Evidence behind this chapter
- Nedeltcheva et al. (2010), insufficient sleep and fat loss, Annals of Internal Medicine
- Schumann et al. (2022), concurrent aerobic and strength training meta-analysis, Sports Medicine
- Behm et al. (2016), acute effects of stretching on performance, Applied Physiology, Nutrition, and Metabolism
- Paluch et al. (2022), daily steps and mortality, The Lancet Public Health
Fact-checked and updated 2026-10-26. General education, not medical advice.