What to Write in a BJJ Training Journal

Start With Five Fields, Not a Blank Page

You just got home from class. You know you should write something down, but "journal your training" is not an instruction, it's a category. Open a blank notebook and the size of the task defeats you before you've written a word.

So don't start with a blank page. Start with five fields. Fill these in after every session, in this order, and you'll never stare at the cursor again:

1. Date, gym, gi or no-gi. Trivial to write, and the thing that makes every other field searchable later.
2. What class covered. The technique or concept the instructor taught, in one line.
3. One thing that worked in rolling. A position, a sweep, a submission, anything you'd want to repeat.
4. What got you caught. Not just the finish, the position and decision right before it.
5. One thing to try next time. A single, specific adjustment, not a vague goal.

That's it. Five lines, maybe ninety seconds of writing. Everything past this point in the post is depth you can add once the five-line habit is automatic, not a prerequisite for starting it.

What to Record About Rounds Specifically

"Rolled five rounds, tough class" tells future-you nothing. A round is worth logging when you capture four things about it: who you rolled with, the position it was decided by, what worked, and what got you caught. Skip any one of these and the entry loses most of its value.

Partner matters because context changes everything. Getting swept by a 220-pound brown belt and getting swept by someone your own size and experience are different data points, and six months from now you won't remember which was which unless you write it down. You don't need their life story, a first name or a nickname is enough to anchor the memory.

Position is the actual unit of BJJ, more than technique is. "Worked on triangles" is almost useless. "Triangle attempts from closed guard when they postured up and stacked" tells you exactly what situation to drill. Every round has a small number of positions it moved through: log those, not just what techniques happened to land inside them.

What worked can be short. A sweep that landed, a guard pass that stuck, a grip that shut down their offense. This is the easy part to write because it feels good, which is exactly why people over-invest in it and under-invest in the next field.

Why "What Got Me Caught" Is the Field Everyone Skips

Nobody wants to write down how they lost. It's the least fun sentence to type after a long day of training, so it's the one people quietly drop first when they're tired. That's a mistake, because it's also the highest-value field in the entire journal.

Here's the distinction that makes it useful: don't just write the submission that finished you, write the position and the decision that put you there. "Got caught in a triangle" is a footnote. "Postured up inside closed guard without controlling a wrist first, gave them the angle for a triangle" is a lesson. The first sentence tells you what happened. The second tells you what to change.

This is also where patterns live. One entry that says "got passed from half guard" is an anecdote. Ten entries over two months that all say some version of "got passed from half guard when I lost the underhook" is a diagnosis. You can't see that pattern if you never wrote the underlying cause down in the first place, and you can't see it at all if the only thing in your notes is "lost that round." The techniques you're stuck on tend to repeat themselves. Your journal is how you notice.

Writing Techniques So You Can Find Them Later

A technique note is only useful if you can find it again in four months, so write it like you're indexing it, not describing it to yourself in the moment. That means naming the position first, then the technique, then the detail that made it click.

"Armbar" is not findable. "Armbar from mount, isolate the far arm before swinging the leg over" is. The position tells you where to look for it later, and the detail is the part you'll actually forget without a written reminder, since the general shape of an armbar you'll remember on your own.

Use the same name for a position every time you write it. If you call it "closed guard" in one entry and "full guard" in the next, you've split one category into two and neither search will find everything. Pick a convention early (standard BJJ terms work fine) and stick to it. This is the one place where a proper training log earns its keep over a paper notebook: RollData tags every entry by position and technique automatically, so "half guard" pulls up every session you've mentioned it in, including the ones where you called it something slightly different.

What Not to Bother Writing Down

Not everything from class deserves ink. Skip:

• Blow-by-blow narration of a whole round. Nobody reviews "he grabbed my collar, then I turned, then he grabbed my other collar." Write the position and outcome, not the play-by-play.
• Every technique demonstrated in class if you only drilled one. If the instructor showed three variations but you only got reps on one, log the one you actually trained. The others didn't enter your body.
• How you felt about the class in general. "Good class" or "rough day" adds nothing a month later. If your energy or mood genuinely affected your training, tie it to something concrete: "gassed by round three, hadn't eaten since morning" is useful, "tired" is not.
• Anything you're writing purely out of obligation. A forced, padded entry you resent writing is more likely to make you quit journaling altogether than a short honest one.

The goal is a log you'll actually keep for a year, not a diary you abandon in three weeks because each entry takes fifteen minutes.

When to Write It: Right After Class or That Night

Write the five-line minimum immediately, while you're still sitting in the car or on the mats. Details about what got you caught degrade fast: the exact grip, the exact moment you lost the position, that specificity is gone within an hour if you don't capture it. A same-day entry written from memory at 11 p.m. tends to compress into generalities ("kept getting passed") instead of the specific, useful version ("passed when I let go of the collar to grip the sleeve").

If you genuinely can't write anything at the gym, that evening is the fallback, not the plan. And if even that slips, a two-line entry the next morning beats a perfect entry you never wrote. The habit matters more than the timing.

A Filled-In Example

Here's what a real entry looks like, using the five fields above:

9/18, Gracie Barra, gi Class: passing half guard, underhook priority before flattening Worked: hit a kimura from top half guard after securing the underhook, first time landing it live Caught: got swept from bottom half guard when I posted my hand flat instead of a fist, they rolled straight over it Next: drill posting on a fist in bottom half guard, and revisit the underhook-first pass on top since it's finally clicking

Four sentences. Specific positions, specific decisions, one thing to repeat and one thing to fix. That's a complete entry, and it took less time to write than this paragraph took to read.

Reviewing What You've Written

A journal you never reread is just a diary. Set a standing ten-minute review, weekly is enough, and read back through the last week's "caught" lines specifically. That's the field where patterns surface fastest: the same position, the same missing grip, the same posture mistake showing up three sessions in a row is your actual curriculum, more honest than anything a syllabus would tell you.

If you've been logging for a few months, look across a longer window too. Are the positions you get caught in shifting over time, or are you still losing the same guard the same way you were losing it at white belt? That shift (or the lack of one) is the clearest signal you have that your training is actually working.

Written on paper, this kind of review means flipping through pages hoping you remember where things are. A structured log makes the pattern visible without the archaeology: RollData's round and technique tracking surfaces your most common positions and outcomes automatically, and if you're comparing it against a notebook or a spreadsheet, the comparison page walks through what a purpose-built log picks up that general note-taking apps miss. Either way, the format matters less than the habit: five lines tonight, reviewed next Sunday, repeated for a year.