?? Get some sleep.
Headache from chess?

It is 1:00 am and I have a HUGE headache ... which I got from playing chess for 2 hours straight today. What should I do?
Obviously you didn't play enough. I say play for more 3 or 4 hours and you'll have a beautiful headache-free day tomorrow.

... which I got from playing chess for 2 hours straight today.
What? That's not even one whole serious game.

At least you don't see chessboards all the time when you close your eyes
lol, I get that all the time, random positions from previous games start popping in my head

?? Get some sleep.
dogs don't sleep do they? Never heard of a dog with headache
Have you ever had a dog? Lol, of course they sleep.

IF YOU WEAR GLASSES.. PROBLEM COULD BE FOCAL DISTANCE TO SCREEN. My optician recommended intermediate focus glasses to use and these make big improvement for me. But everyone needs periodic breaks from screen work- it used to be minimum 10 mins in every hour when, years ago, I worked in an airline reservations office.

I has found that chess sometimes gives me AIDS, but me always gets over it - these Alcohol Induced Dizzy Spells is nearly always fixable by hittin´the hay

?? Get some sleep.
dogs don't sleep do they? Never heard of a dog with headache
Have you ever had a dog? Lol, of course they sleep.
mine doesn't

It's probably your monitor, not the chess itself.
I've been lobbying for a chess.com implant that bypasses your ocular system altogether in favour of a direct dedicated signal into the brain so that I might be able to enjoy pure, unadulterated chess.com without the eyestrain and inevitable headaches that come with it.
If I could get this, and some means of mainlining coffee I'd be a happy, happy man.
It is 1:00 am and I have a HUGE headache ... which I got from playing chess for 2 hours straight today. What should I do?