T L ; D R
Short version: stretching more is not the fix. Finding which of the five you fail, then retesting that one in four to six weeks, is. |
Five checks, about ten minutes, nothing but a wall and a stick. Hold a deep squat for 30 seconds. Switch sides in 90/90 without pushing off your hands. Get your knee past your toes at the wall. Clasp your hands behind your back on both sides. Rotate your upper back roughly 45 degrees with your hips pinned. Pass all five and your mobility is not the reason your guard keeps getting flattened. Fail one and you have something specific to work on instead of a vague plan to stretch more.
Ten minutes before class, when the room is still empty, is the only reliable time most people ever test themselves.
Testing beats guessing
Most grapplers know they are stiff somewhere. Very few know where. So they roll out the same tight hamstring for three years while the actual problem sits in an ankle that will not bend, or a mid back that turned into one solid block sometime around their second stripe.
A test gives you a number, or at least a yes and a no. That is the whole point of it. You are not trying to look good on Instagram in a middle split. You are trying to find the one joint that is forcing the rest of your body to cheat.
Do these cold, not after training. Warm tissue flatters you.
The five checks
1. The 90/90 hip switch
Sit on the floor. Front leg bent to 90 degrees in front of you, back leg bent to 90 degrees out to the side. Now rotate both knees over to the other side without using your hands and without your feet leaving the floor.
Pass: you get all the way over, both directions, hands off the floor.
Fail: you tip backwards, or one side goes and the other does not. That asymmetry matters more than the absolute range. A hip that cannot rotate internally is a hip that will not let you underhook and turn.
2. Knee to wall
Stand facing a wall, toes about four inches back from it. Drive your knee forward over your toes, heel glued down, and try to touch the wall with your kneecap.
Pass: knee touches, heel stays flat, both sides equal.
Fail: heel lifts, or one side is visibly shorter. Stiff ankles show up in your squat, your shot, and the way you crumple sideways when you try to stand in someone’s guard.
3. Hands behind the back
Reach one arm over your shoulder and the other up from your lower back. Try to link fingers. Swap sides.
Pass: fingers touch or overlap on both sides.
Fail: a gap on one side, usually the arm coming from below. Shoulders that will not go into that shape make defending an armbar a much shorter conversation than it should be.
4. Seated thoracic rotation
Sit on a chair or on your heels, knees together, arms crossed over your chest. Turn your shoulders one way, then the other, keeping your hips still.
Pass: roughly 45 degrees each way, symmetrical.
Fail: less than that, or one side lagging. When your upper back will not rotate, your lower back does it instead. Ask anyone who has spent a week walking sideways after a hard sparring round.
5. The 30 second deep squat
Feet about shoulder width, heels down, sink as low as you can and stay there for 30 seconds.
Pass: heels down, chest up, no wobbling, and you can breathe normally the whole time.
Fail: heels pop, you fold forward, or 30 seconds feels like a submission.
| Check | Pass looks like | What a fail usually costs on the mat |
|---|---|---|
| 90/90 hip switch | Both sides, hands off the floor | Guard retention, hip escapes, shrimping under pressure |
| Knee to wall | Kneecap touches, heel flat, sides equal | Standing up in base, shots, squat depth |
| Hands behind back | Fingers touch on both sides | Armbar defense, arm drag range, back escapes |
| Seated rotation | About 45 degrees, symmetrical | Turning in, framing, lower back that complains after rounds |
| Deep squat hold | 30 seconds, heels down, easy breathing | Passing posture, sprawls, getting up off the floor cleanly |
What to do about the one you failed
Two drills. That is it. Take the position you failed, find a loaded version of it and an active version of it, and do five minutes a day for four weeks. Loaded means you own the range under some resistance, not just hang out in it. Active means you can get there under your own power without a strap dragging you.
Then test again. That last part is where almost everyone quits, and it is the part that makes the difference between owning new range and renting it. It is the loop behind structured mobility training, whether you buy it from a coach in London or run it yourself with a notebook and a phone timer: screen, prescribe two or three things, retest the same positions four to six weeks later, change what did not move.
The loop is deliberately small. Two drills you will actually do beat eight you will abandon by Thursday.
Where grapplers actually get hurt
A survey of 1,140 jiu jitsu athletes from 62 countries, published in the Orthopaedic Journal of Sports Medicine, found that 77.6 percent of injuries happened during sparring rather than competition, with the knee the single most affected joint at 27.1 percent and the shoulder at 14.6 percent. Warm ups accounted for 1.4 percent.
Read that last number again. The warm up is not what hurts people. Sparring is. Which means the case for mobility work has nothing to do with avoiding injury during your joint circles, and everything to do with whether your knee and shoulder can reach the positions they are dragged into at minute four of a hard round with a bigger training partner. BJJEE has covered the link between hip flexibility and lower body injuries before, and the pattern in the survey data lines up with it.
Does stretching before you roll do anything?
Yes, a bit, and probably not what you think. A 2023 meta analysis in Sports Medicine Open pooled 47 studies and found that static, dynamic, ballistic and PNF stretching all produced similar short term gains in range of motion, with no significant difference between techniques and no meaningful effect of how long the stretch was held. Even five second holds moved the needle.
So the argument about whether static stretching before class ruins you is mostly noise. Do the thing that gets you into the shapes you are about to need. Then go train.
Retest, do not rebuy
The five checks are not a program. They are a way of finding out whether the thing you have been blaming is the thing that is actually broken. Run them cold this week, write the results on the back of an old competition bracket, and stick it in your gear bag.
Run them again in six weeks. If nothing moved, the drills were wrong or you did not do them. Both are fixable, and both are better problems than not knowing.
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