Your heart rate will increase up to 120-140 beats per minute during an average sauna session. Then, when you leave the sauna, your heart rate is likely to drop below your resting level. These changes increase your cardiac output, and your heart muscles become stronger.
To make your sauna experience even more beneficial, you can divide sauna "sets." Spend 10 minutes in the sauna, and then take a 2 to 3-minute break to cool down. Repeat this process three or four times. The quick temperature change will elevate your heart rate by up to 60%. This will cause a similar effect to doing moderate cardio exercise.
Sweating can help cleanse your pores, all of which is to say your skin may seem more clear after using the sauna. But if you have a skin condition such as eczema or psoriasis, experts caution that the sauna may aggravate your skin. Speak to your dermatologist prior to using the sauna and stop if you notice any rashes or skin conditions develop. Since saunas can be moist, public saunas may be a breeding ground for bacteria and mold, which could cause potential skin conditions.