Relaxing in a steam room, or sauna, is an activity that is best done in moderation. There is no formal recommendation for how often a steam room should be used. The decision rests entirely on the individual.
Steam rooms are set at various temperatures. What is comfortable for one person may not be for another. Sitting in a room filled with steam causes the body to dehydrate. Steam rooms also contain bacteria and fungus. Too much exposure to high heat can have negative effects on the body. Comfort and health should factor into the decision of how often to use a steam room.
People who are pregnant, have a heart condition, high blood pressure or take certain medications should speak with a doctor before using a steam room.