To create your own sauna at home, choose the smallest bathroom, since it is easy to trap the steam and heat better in a small place than the large one.
Close the doors to the bathroom and cover the windows properly to make your bathroom as air tight as possible. If there are any cracks in the doors or windows from where steam can escape, cover them with towels and heavy drapes. Make sure you also cover the crack at the bottom of the door using towels.
Wash and drain your bath tub, plug it and turn on the boiling hot water. In the meantime close your shower curtains to trap maximum amount of heat and steam to create a sauna atmosphere.
Turn off the water after your bath tub is half full.
Sit next to the tub and enjoy the heat and steam filled in the bathroom for 15-20 minutes. Use a wet washcloth to cool your skin when needed.
Follow up the sauna experience with a lukewarm shower. This will gradually lower your body temperature.