How do you sweat in the hea..

I WANT TO KNOW HOW TO SWEAT IN THE HEAD AND IN THE ARMS A LOT.

You want to know how to sweat? Or how to STOP sweating? Your question is posed as if you want to know how sweat MORE from your head and arms. I'd ask an English speaking friend how to ask the question so you get the correct answer. As it is, your question doesn't make much sense. If you want to know how sweat, go outside at about noon or 1pm and run around the block 2 or 3 times. You should be sweating a lot.

High Metabolism, there are medical treatments for over active glands.

The armpit because it's one of the warmest regions of your body, and is also one of the areas most saturated with sweat glands. The head because it's where the brain is, and the sweating serves the same purpose as your hair. The sweat helps cool the head down to prevent overheating the brain, and the hair serves a shielding and insulating function.