How do you get a headache?

You can get a headache for many, many different reasons, including being too hot, hearing loud noises, being hungry, being thirsty, or being tired.

If you have back problems it can cause you to have a headache if something is out of place. Also if you don't have enough sleep and stay up really late for a few days it can cause you to have a headache. If you get hit in the head with an object it could cause one too.