You should wash your face and body.

You should change clothes and bed linen

You should drink plenty of water to replenish the body fluid you lost.

You should lower the room temperature slightly to prevent further sweating.

If you sweat too much, for too long, or inexplicably from natural causes

If you feel chest pain or pressure in your chest during and after sweating

If sweating is accompanied by weight loss or if you sweat mostly at night