Steam rooms use moist heat. The steam rooms helps to open airways which improves your breathing and alleviates congestion. The wet heat from the steam thins and opens the mucous membranes in the body, which helps to relieve pressure. This is highly beneficial for those that suffer from asthma and bronchitis, as it helps with sinus relief.
Steam rooms also increases metabolism and can aid with weight loss. The steam causes you to sweat, which means that your body is losing water. As water makes up a large part of your body weight, the emission of the sweat will cause you to lose a few pounds. The sweat also helps to remove toxins and cleanses the body. The steam also helps to clear out any impurities from the skin.