Saunas have been used for thousands of years and are still popular today. A sauna can help people to unwind and relax, and it may have other health benefits.
A sauna is typically a room heated to between 70° to 100° Celsius or 158° to 212° Fahrenheit.
A sauna use can raise the skin temperature to roughly 40° Celsius or 104° Fahrenheit.
As the skin temperature rises, heavy sweating also occurs. The heart rate rises as the body attempts to keep cool. It is not uncommon to lose about a pint of sweat while spending a short time in a sauna.
Regardless of how a sauna is heated, or the humidity level, the effects on the body are similar.
When a person sits in a sauna, their heart rate increases and blood vessels widen. This increases circulation, in a similar way to low to moderate exercise depending on the duration of sauna use.
Heart rate may increase to 100-150 beats a minute while using a sauna. This may bring some health benefits.