Built on the Mats

BJJ Notes, FlowRoll, TOMO, Jits AI and more, with prices and ratings read from each listing, and what we think of apps that call themselves a coach.

Why TOMO beats paper after a hard class, where a notebook still shines, and why any journal beats no journal at all.

When to write, what to track, a template you can copy tonight, and how to read it back each week so it tells you what to fix.

You haven't trained in months. Tonight you're going back. Here's how to survive the comeback without getting hurt or quitting.

Men are stronger on day one. But BJJ doesn't care about day one. It cares about day 300. And the people still standing on day 300 aren't who you'd expect.

The greatest no-gi grappler of his generation stepped away because his body wouldn't let him continue. For the practitioner over 30, his story reframes what "success" in BJJ actually looks like.

There are two training sessions happening every time you step on the mat. The one everyone can see. And the one only you know about.

Youth athletes who reflected most on their training were 4.9x more likely to reach elite academies. But the post-training window where details are freshest is also when your brain works worst. Here's how to solve that.

Process goals produce 15x larger performance effects than outcome goals. Here's why your submission count is giving you a false signal about your development.

The calculations nobody sees. The questions that live rent-free. The drive home when there is no one who gets it. An essay about what it actually feels like to be the only woman in the room.

Women represent ~10% of BJJ practitioners but are the sport's fastest-growing demographic. The measurement problem they face every session is also their biggest technical advantage.