How do we sleep off a headache?

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How come that even with a very painful headache, all we need in most cases is a 2-3 hour nap and we are good to go? Does the body “heal” the headache in our sleep?

In: Biology

Aches are indication of something wrong going on. For instence, if you hit you feet to the table, it hurts cuz you could potentially get injured and your body tells you not to do that. And if you have a headache, something in your head is wrong and its MOSTLY because your brain is tired and you solve that problem when you sleep. In other cases like head injuries, high or low blood pressure, high or low blood sugar, too much salt, too little fluid intake etc. sleep isnt always enough. You sometimes need a painkiller.