Weird question about head stuff. so i sat down a bit too fast and hard on a surface. its weird because i could feel it in my head and it gave me a slight headache. why is it if i sit down hard like that i can feel it in head? is it causing brain inj?

Sat hard: You may have merely had a sudden strain affecting the scalp muscles rather than jolting the brain itself. Either way, you're not experiencing any worrisome symptoms of a concussion such as dizziness, nausea, sleepiness, confusion or visual complaints. The headache is mild. I think you'll be fine but if you still have concerns, see a physician for evaluation.