Tracing Sauna’s Mechanism of Action for Health

Summary: Researchers in Finland found out why saunas are so good for you. When you sit in a hot sauna for 30 minutes, your body releases more white blood cells into your blood. These cells are like your body's army, fighting off germs and keeping you from getting sick. The heat also changes other immune signals in your body. So, relaxing in a sauna doesn't just feel good—it actually helps your immune system patrol your body better!

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