Tell your coach your head's not right, even in the final

You know the moment. Somebody's shoulder catches the side of your helmet, the field goes bright white for half a second, and when the noise comes back you're already doing math. Six minutes left. Regional final. Your backup has played four snaps all year.

Nobody saw it. You could just play.

Don't. Walk to the sideline and say the sentence out loud, and I'll give you the exact words further down. But first you should know what you'd actually be gambling with, because "shake it off" is advice from an era that didn't know any better.

A concussion isn't a skull injury

Your brain floats. It sits in fluid inside a hard case, which is a brilliant design for most of life and a lousy one for collision sports. A hard hit to the head, or a hard hit to the body that snaps your head around, makes the brain move inside the case and get stretched and jostled. That's it. That's the injury.

Which explains the thing that confuses guys most: you don't have to hit your head to get a concussion, and you don't have to black out either. Most concussions don't involve losing consciousness at all. If you're waiting to wake up on the grass before you take it seriously, you'll miss almost every one you ever get.

It also explains why your helmet won't save you here. Helmets are outstanding at preventing skull fractures and they're worth every dollar and every minute spent getting the fit right. They can't stop your brain from sloshing. Same with mouthguards. Wear both, every practice, and don't believe anyone selling you a helmet that "prevents concussions."

What it actually feels like

Guys expect drama. Usually it's vaguer and easier to explain away.

• Headache, or pressure in your head
• Feeling foggy, slow, like you're playing a half-step behind
• Ringing ears, blurry or doubled vision, light or noise suddenly being too much
• Dizziness, or the ground feeling tilted when you turn your head
• Feeling sick to your stomach
• Being weirdly irritated or flat, for no reason you can name
• Not remembering the hit, or not remembering the series after it
• Someone asking you the score and you having to think about it

Here's the part that catches people: symptoms can show up late. You can feel basically fine for the rest of the quarter and wake up the next morning with a headache and a brain full of wet sand. That's normal for this injury, and it's exactly why the honest move is to report the hit, not to report the symptoms you happen to have twelve seconds afterward.

The reason it's not worth it

Two reasons, and the first one is the serious one.

A concussed brain is in a temporary repair state. Take a second hit before it's done, and the damage from that second hit can be far worse than it should be for the force involved. That's the whole reason every league in the country now has a return-to-play protocol instead of a smelling salt. Doctors don't fully agree on every detail of concussion care, but on this they're unanimous: the dangerous hit is the one you take while you're still hurt.

The second reason is less scary and more immediate. A concussed athlete is slow. Your reaction time is off, your balance is off, your field awareness is off. You aren't being tough by staying in, you're being a hole in the defense that your teammates now have to cover. Your backup, playing scared at 100 percent, is better than you playing brave at 70.

Both of those are worth more than six minutes.

Say it like this

Walk to your coach or your athletic trainer and say:

"I took a shot to the head and I'm not right. I need to get checked."

That's it. Don't soften it. Don't say "I might be a little dinged up," because you're handing your coach an excuse to leave you in, and in that moment he wants one as badly as you do.

If your coach waves you off, go to the trainer. If there's no trainer, go to your parents in the stands, or the school nurse on Monday morning, or the other team's trainer if you're on the road. That isn't going behind anybody's back. Adults who deal with head injuries would rather be bothered a hundred times for nothing than miss one. You won't be in trouble. Not with anyone whose opinion should matter to you.

And do it even if the hit looked like nothing. Especially then.

Somebody sensible would tell you to play

Let's be fair to the other side, because you'll hear it.

You might lose your spot. Not just the final, maybe a few weeks after it, and a guy who plays well in your absence might keep the job. Coaches say they don't do that. Some do it anyway, without meaning to. A scout in the stands doesn't see the film of the game you sat out. Those costs are real, and anybody who pretends they aren't hasn't played.

Take them anyway. You can lose a spot and win it back next season. Brains don't work on that schedule. There's a whole population of former athletes managing headaches, sleep problems and short fuses in their thirties because of hits nobody wrote down at the time, and not one of them can name the score of the game they played through.

What happens after you tell

Expect this, so it doesn't feel like a punishment:

You're done for the day. No same-day return, anywhere, at any level. That's a rule, not a coach's judgment call.

Then a doctor. Specifically one who handles head injuries, and you should ask your parents to get you in rather than waiting to see if it clears up. If your symptoms get worse instead of better, if you throw up repeatedly, if you can't stay awake, if one pupil looks bigger than the other, or you get weak or numb anywhere, that's the emergency room tonight.

Then a couple of quiet days. Not a blacked-out room for a week, which is outdated, but genuinely easy days: less screen time, less noise, early nights. Then light movement, then hard movement, then contact, each step only if the last one didn't bring symptoms back. Your doctor sets the steps. You don't get to skip one because you feel great on Tuesday.

Tell your teachers too. A concussed brain doesn't read well or hold information well for a while, and most schools will give you extra time on tests if somebody actually tells them what happened.

Be the guy who tells on his friend

You'll spot it in someone else before they admit it. Your linebacker takes a hit and comes back to the huddle asking what the call was. Your buddy at practice is squinting and rubbing his temple and says he's fine.

Tell the trainer. He might be annoyed with you for an hour. He'll be fine by dinner.

There's a version of toughness that's just a guy refusing to say a hard sentence out loud, and that one's cheap. The real one is walking off the field in a final with everyone watching, because you know something they don't and you're going to be honest about it anyway.

Your season ends. Every season does. You get one brain for the next sixty years.