Published by Graded Backpacks | BJJ Lifestyle | Gym Culture
BJJ has plenty of written rules — tap early, respect the coach, show up on time. But some of the most important rules in the room are the ones nobody wants to stop class to explain.
Hygiene is one of them.
In a sport built on close contact, sweaty rounds, shared mats, and constant friction, your hygiene is not just a personal habit. It is part of being a trustworthy training partner. Clean nails, clean gear, covered cuts, sandals off the mat and on around the gym — these are small decisions that protect everyone in the room.
This is not about being overly precious. It is about respect, safety, and keeping the academy a place where people can train hard without unnecessary problems.
1. Trim Your Nails Before They Become Someone Else's Problem
Nobody wants to finish a round and find fresh scratches across their face, neck, or feet. Long fingernails and toenails are one of the most avoidable hygiene mistakes in jiu-jitsu, and they matter more than many newer grapplers realize.
Short nails help with:
- Preventing accidental cuts and scratches
- Reducing places where dirt and bacteria can sit
- Making grips and hand-fighting safer for training partners
The simple rule is this: if your nails can leave a mark, they are too long for the mats.
Make trimming them part of your weekly routine, not something you remember only after someone points it out. And if you train several times a week, check them more often than you think you need to.
2. Footwear Has a Job: Protect the Mats From Everything Off Them
One of the clearest unwritten rules in BJJ is also one of the most important: bare feet on the mat, sandals off the mat.
That means:
- Do not walk into the bathroom barefoot and then step back onto the mat
- Do not wear your flip flops onto the training surface
- Do not step outside, then return to the mat without cleaning up properly
Sandals or slides are there to keep whatever is on the floor from coming back with you onto the mat. It sounds basic because it is basic, but it is one of the habits that keeps a gym cleaner over the long term.
If your academy has a shoe line or a mat edge where footwear comes off, treat it seriously. Good mat hygiene is built from everyone respecting that boundary every day.
3. Cover Cuts, Scrapes, and Open Skin
This is one of the biggest ones.
According to current CDC guidance for athletes, skin infections spread more easily when there is close physical contact, shared facilities, and uncovered cuts or abrasions. That matters in BJJ.
If you have a cut, mat burn, scrape, or cracked skin:
- Clean it first
- Cover it with a clean, dry bandage
- Make sure it will stay covered through class
If it will not stay covered, or if the area looks irritated, infected, or suspicious, sit the session out and get it checked.
This is also the right place to say the quiet part out loud: if something on your skin looks unusual, do not train through it to be tough. Responsible training means protecting your partners as much as yourself.
That includes:
- Possible ringworm
- Unexplained rashes
- Draining spots
- Painful red bumps
- Anything that seems to be getting worse instead of better
When in doubt, pause and get medical advice. Missing one class is better than creating a problem for the whole room.
4. Clean Gear Is Part of Good Etiquette, Not an Upgrade
If your gi, rashguard, shorts, belt, knee sleeves, or towel smell bad before class starts, they are already overdue for cleaning.
CDC guidance for athletes also emphasizes washing clothing and towels after each use and fully drying them. That lines up with what every experienced grappler already knows: re-wearing dirty kit is one of the fastest ways to make yourself the training partner people quietly avoid.
The baseline standard:
- Fresh gi or no-gi gear every session
- Clean towel
- Clean mouthguard and case
- Gear fully dried before it gets packed away
And yes, your belt counts too. Plenty of people joke about never washing belts, but if it smells bad or looks grimy, that is not tradition — that is just dirty gear.
5. Your Bag Needs Hygiene Too
Even clean gear can start smelling bad if it gets sealed inside a damp, neglected bag.
Your backpack is part of your training system. If sweat-soaked gear, used tape, wrappers, and damp towels live in there together for days, the smell will spread to everything.
A few habits go a long way:
- Empty your bag after every session
- Let it air out fully
- Wipe down the interior when needed
- Keep sweaty gear separated from dry items
- Remove tape rolls, mouthguard cases, and small accessories that collect moisture
This is exactly where a purpose-built backpack helps. When your BJJ bag has dedicated compartments and enough space to organize wet and dry gear separately, it becomes much easier to stay consistent.
For a lot of grapplers, bad bag smell is not really a laundry problem. It is an organization problem.
6. Do Not Share Personal Items
Another CDC recommendation for athletes is not sharing personal items like towels, bar soap, or razors. In BJJ terms, that mindset extends naturally to the stuff that sits closest to your body.
Avoid sharing:
- Towels
- Mouthguards
- Protective cups
- Rashguards
- Tape that has already been sitting loose in a dirty pocket
Lending somebody a fresh roll of tape or a clean spare towel is one thing. Passing around personal gear that has already been used is another.
Good intentions do not cancel out bad hygiene.
7. Shower, Wash Up, and Deal With Gear Quickly
After training, do not leave your post-class routine until later if you can help it.
CDC guidance for athletes recommends showering after exercise and not sharing towels or bar soap. The faster you clean yourself and handle your gear, the less time sweat and bacteria have to settle in.
A solid post-class routine looks like this:
- Put sandals on before stepping off the mat area
- Pack wet gear separately if needed
- Shower as soon as practical
- Wash your hands after dealing with cuts, tape, or used bandages
- Get your training clothes into the wash the same day
It is not glamorous, but it is part of training well.
8. Responsible Training Means Knowing When Not to Roll
This is probably the most important unwritten rule of all.
Sometimes the best way to be a good training partner is to skip the round.
If you have:
- A skin issue you cannot identify
- A cut that keeps opening
- Gear that is still damp and sour from the last session
- Flu-like symptoms or anything contagious
take the conservative option.
Nobody earns respect by showing up with a preventable hygiene problem. In good gyms, responsible restraint is seen as maturity, not weakness.
That mindset matters even more if you are a coach, upper belt, or regular face in the room. Newer students copy what experienced people normalize.
The Simple BJJ Hygiene Checklist
Before class:
- Nails trimmed
- Clean gi or no-gi kit
- Belt clean and dry
- Mouthguard cleaned
- Sandals packed
- No suspicious skin issues
- Cuts covered securely
After class:
- Shower
- Wash gear
- Dry everything fully
- Empty and air out the bag
- Replace used bandages or tape
If every grappler handled those basics consistently, most hygiene issues in gyms would drop fast.
Final Thought
BJJ is a close-contact sport built on trust. Your partners let you grab them, lean on them, sweat on them, and train at full intensity in tight spaces. Good hygiene is one of the clearest ways to show that you take that trust seriously.
It does not require perfection. It requires habits.
Trim your nails. Wear your sandals properly. Wash your gear. Cover your cuts. Keep your bag clean. And if something seems off, stay off the mat until it is handled.
Those are the unwritten rules. The best gyms do not have to repeat them often because the culture already does.
A well-organized training routine starts before class begins. The Graded Backpack makes it easier to separate gear, keep essentials in order, and build better BJJ habits from the ground up. See the full collection.