Men who use the sauna 3 times a week were 27% percent less likely to develop pneumonia than those who used the sauna once a week, and those that used it 4-7 times were 41% less likely to develop pneumonia.
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Sauna Use Reduces Risk of Chronic Acute Respiratory Illnesses Like Pneumonia
Hot baths have been shown to increase heat shock proteins ... Heat shock proteins play a major role in boosting immunity... and also increasing immune cells.
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Like Saunas, Hot Baths Also Increase Heat Shock Proteins