Liga Combat · Training & Recovery
Winter BJJ: Why Cold Muscles Get Injured (and How to Warm Up Right)
Injuries climb in winter for a reason rooted in physiology. Here’s what actually happens to cold muscle and tendon — and a warm-up that gets you ready to roll.
Lukie Ali
Key takeaways
Winter injuries are physiology, not bad luck: cold tissue is more viscous and less elastic, blood flow is lower, nerve signals fire slower, and the synovial fluid lubricating your joints is thicker.
That is why the first hard movement on a cold morning is so often the one that tweaks something.
A real warm-up follows raise → mobilise → potentiate — roughly ten honest minutes, and in winter the “raise” phase takes longer than you think.
Skip it and your first two rounds become the warm-up, which is exactly when people get hurt.
Winter stacks colder tissue, rushed warm-ups and accumulated fatigue — so manage training load and treat recovery as part of training. Heat a stiff joint before class; cold settles a swollen, hot one after.
Ask any coach and they’ll tell you: injuries climb in winter. It’s not bad luck or soft students — it’s physiology. Once you understand what the cold actually does to a muscle, the fix (and why the usual “quick jog and roll” doesn’t cut it) becomes obvious.
/ What cold actually does to a muscle
Muscle and tendon behave differently at different temperatures. When tissue is cold it’s more viscous and less elastic — stiffer, slower to stretch, and quicker to tear when you load it fast. Blood flow to the area is lower, nerve signals fire a touch slower, and the synovial fluid that lubricates your joints is thicker and less slippery. So the exact same explosive scramble or deep shrimp that feels effortless in a warm summer class is landing on tissue that simply isn’t ready for it. That’s why the first hard movement on a cold morning is so often the one that tweaks something.
/ A warm-up that actually prepares you
“Warming up” isn’t five minutes of half-hearted jogging. A good one follows a simple order — raise, mobilise, then potentiate:
- Raise (3–5 min). Light continuous movement until you’re genuinely warm and lightly sweating. In winter this takes longer than you think — don’t rush it.
- Mobilise (3–4 min). Move the joints you’re about to use through their full range: hip circles, shrimping and bridging on the mat, neck and shoulder rolls, wrist and finger mobility.
- Potentiate (2–3 min). A handful of progressively sharper movements — sprawls, sit-outs, a few hard grips — to switch the nervous system on before you drill or roll.
Ten honest minutes and you walk onto the mat warm, mobile and switched on — instead of using your first two rounds as the warm-up (which is exactly when people get hurt).
/ Why “push through it” backfires in the cold
Winter stacks the odds against you: colder tissue, a rushed warm-up, and the accumulated fatigue of a season where you’re sleeping worse and half the gym is fighting a cold. That’s the injury trifecta. Managing your training load — and treating recovery as part of training, not an afterthought — matters more in July than at any other time of year.
/ Look after the joint that’s already grumbling
If a knee or elbow is stiff before class, a little heat beforehand helps it move; if it’s swollen and hot after a hard session, cold settles it down. Knowing which to reach for is worth getting right — we broke it down in the ice-or-heat guide.
Warm up properly, keep showing up, and you’ll come out of winter sharper than everyone who didn’t. — Liga Combat
What the evidence says
By Lukie Ali, BJJ Brown Belt · Liga Combat · Last updated 14 July 2026
There’s real physiology behind “cold muscles get injured”: below core temperature, a muscle needs less energy to tear. That’s why a proper warm-up — active movement that raises tissue temperature and blood flow — matters most in winter.
“The energy required to induce muscle failure was significantly lower at muscle temperatures of 17°C to 32°C compared with muscle at core temperature.”— Scott et al., Bone & Joint Research, 2016
Warming up works: a meta-analysis of 15 trials (21,576 participants) found structured warm-up programmes cut injury rates by about a third — “injury rate ratio… 0.64… (36% reduction)” (Ding et al., 2022). That study is in youth athletes, so treat it as “warm-ups reduce injuries,” not a product claim.
And most BJJ injuries happen in training, not competition — one study found 91% of practitioners injured, “primarily sprains and strains” (Petrisor et al., Sports Health 2019); another found 85.7% injured (McDonald et al., 2017). Sprains and strains are exactly the soft-tissue injuries most sensitive to muscle temperature. Use an active RAMP-style warm-up (Raise, Activate, Mobilise, Potentiate); a hot/cold sleeve helps retain and deliver heat in the cold, but it complements the warm-up — it doesn’t replace it.
Sources & further reading
- Scott EEF, et al. Increased risk of muscle tears below physiological temperature ranges. Bone Joint Res 2016.
- Ding L, et al. Effectiveness of Warm-Up Programs to Prevent Sports Injuries: meta-analysis. IJERPH 2022.
- Petrisor BA, et al. Injury in Brazilian Jiu-Jitsu Training. Sports Health 2019;11(5):432–439.
- McDonald AR, et al. Prevalence of Injuries during Brazilian Jiu-Jitsu Training. Sports 2017.
This guide is general information for training recovery, not medical advice. For a serious or persistent injury, see a doctor or physiotherapist.
From the Liga Combat range
Heat before, ice after
The Re-Gen Hot & Cold Recovery Sleeve warms up cranky joints before training and ices the swelling after — one sleeve for knee, elbow, calf or forearm.
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