How to tie your jiu-jitsu belt (and why it keeps coming off)

My belt came untied four times in my first class. The fifth time, an upper belt retied it for me in about three seconds while explaining that this is the most-retied knot in sports. Here is the standard method, in words.

The basic tie, step by step

1. Find the middle of the belt and press it against your stomach, just below your navel.
2. Wrap both ends behind you, cross them at your spine, and bring them back to the front. Keep the layers stacked, not twisted.
3. You now have two ends in front. Cross the left end over the right end, then tuck it up and under both layers around your waist and pull it through, so it points up.
4. Now tie the two ends in a simple knot: top end over and through. Pull both ends sideways, hard. The knot should sit flat, ends roughly even, pointing down like whiskers.

Reading this is harder than doing it. Do it five times slowly at home and your hands will keep the knot long after your head loses it.

Why it keeps coming off anyway

Because people are actively pulling on you, and the knot is a friction knot in slick cotton. Everyone's belt comes off. You will see black belts retie theirs a dozen times a class. There are fancier variations that hold longer (a search for "lockdown belt tie" will fill an evening), but the standard knot plus the habit of retying it without thinking is the actual solution.

The etiquette part

When your belt comes off mid-drill, just retie it at the first natural pause. The tradition in most rooms: turn slightly away from the center, or kneel, retie, return. Watch what your gym does and copy it. Nobody is annoyed. A coming-untied belt is the most normal event in the room.

The belt holds your jacket closed and tells the room how long you have been confused. That is all it does. Tie it well enough and get back to the part that matters.