If you’re putting in the kilometres, grinding through sessions and chasing PBs, here’s the uncomfortable truth. Your bed is doing as much of the heavy lifting as your legs. A new study from the University of South Australia and European partners found recreational runners who sleep poorly or too little are almost twice as likely to get injured compared to runners who get solid rest.
The numbers back it up hard. The study looked at more than four hundred recreational runners, average age mid-forties, and found that sixty percent had been injured in the past year.
Almost forty percent fell into the “Poor Sleepers” category with short sleep, low-quality sleep and regular disturbances. That group wasn’t just a little worse off. Their injury odds jumped by a factor of 1.78 and their calculated probability of being injured within twelve months hit sixty-eight percent.
In plain English, if your sleep is rubbish, the maths says your chances of breaking down go from “possible” to “likely”. The study’s lead Professor Jan de Jonge, calls the findings “compelling evidence that sleep is a critical yet often overlooked component of injury prevention.”
“While runners specifically focus on mileage, nutrition and recovery strategies, sleep tends to fall to the bottom of the list,” he explained.
For the bloke who trains before sunrise or after the kids are in bed, this should hit home. You can put yourself through heroic sessions, but if you follow them by doom-scrolling with blue light blasting your eyeballs, smashing late coffees or treating six hours of sleep as “good enough”, you’re operating with a weak recovery buffer. Poor sleep flattens hormones, slows tissue repair, wrecks coordination and makes you more likely to mis-step, strain or overload something, as proved by maths.
Sleepmaxxing
The simple system of squeezing every bit of recovery out of your nights.
- Treat sleep like training. Schedule it, protect it, prioritise it.
- Aim for consistency. Same bedtime, same wake time, even on weekends.
- Build a pre-sleep wind-down routine. Less phone, more calm.
- Keep the room cool and dark to maximise deep sleep.
- Don’t brag about grinding on five hours. Nothing torpedoes gains faster.
Want the deeper dive? Read our full guide on sleepmaxxing and recovering like a pro .
There are caveats, of course. The study is self-reported, meaning runners described their own sleep and injuries, so causation isn’t locked in. Plenty of other factors influence injury risk like training load, biomechanics, footwear, nutrition and age. But the effect size is large enough that you’d be silly to ignore it. Sleep isn’t optional seasoning on top of training. It’s part of the programme. You can burn the candle at both ends when you’re not training, but if you’re serious, sleep should be number 2 on you list.
