The sauna inside the Beauty Farm is a very good way to tone up your body.

It is a small room designed to be heated to very high temperatures, with well-controlled humidity. Sauna is built of wood and it is used both for recreational and therapeutic purposes, with most people utilizing it as a relaxation tool that provides additional health benefits. Sauna has hot stones which are splashed with water to release both a short burst of steam, (temporarily creating the impression of a higher temperature), and a pleasing aroma. Many cultures have independently created their own form of sauna.

The Finnish sauna, which is by far the most popular globally, originated as a hole in the ground with a fire in the middle and an insulating roof.
Saunas are known to be used by alternating hot and cold. To get the best result you may, spend enough time in the sauna to become hot, and then leaving the sauna to cool down by stepping into very cold water before repeating, This shock is thought by some to be good for the immune system, though others hold it can be detrimental to one's health. Those with high blood pressure should be especially careful of this immediate transfer from hot to cold, as it spikes blood pressure for brief periods.