And, if truth be told, his brain was feeling too paralyzed to think.

But my brain felt like something had crawled into it and died.

His brain felt blocked off, not working at all the way it should.

His brain felt relaxed, as if he'd had one drink too many.

And his brain felt no fresher for a night's sleep.

His brains felt as though they'd been stirred with a stick.

A point where the human brain and body feels like it cannot be pushed further or continue.

His brain felt as if it was frying in the sun.

His brain felt as though it were going to explode!

Her brain felt as if it had fused, and she couldn't stop herself.