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After shoveling for days, breaking up ice dams, and now shivering in this week鈥檚 frigid temperatures, I wouldn鈥檛 mind sitting in a sauna for a bit. A new report in makes this pastime even more appealing: regularly spending time in a sauna may help keep the heart healthy and extend life.

Researchers from the University of Eastern Finland tracked 2,300 middle-aged men for an average of 20 years. They categorized the men into three groups according to how often they used a sauna each week. The men spent an average of 14 minutes per visit baking in 175掳 F heat. Over the course of the study, 49% of men who went to a sauna once a week died, compared with 38% of those who went two to three times a week and just 31% of those who went four to seven times a week. Frequent visits to a sauna were also associated with lower death rates from cardiovascular disease and stroke.

The results don鈥檛 surprise Dr. Thomas H. Lee, a cardiologist at Harvard-affiliated Brigham and Women鈥檚 Hospital and founding editor of the Harvard Heart Letter. 鈥淭he cardiovascular effects of sauna have been well documented in the past. It lowers blood pressure, and there is every reason to believe that its effects are good for blood vessels,鈥� says Dr. Lee.

have shown that regular sauna bathing may benefit people with risk factors for heart disease, such as high cholesterol, high blood pressure, and diabetes. It鈥檚 generally safe and likely beneficial , but may not be so hot for those with unstable angina or a recent heart attack.

The researchers were quick to state that because of the unique properties of Finnish saunas, their results aren鈥檛 applicable to steam baths and hot tubs. Finnish saunas are wood-lined rooms, usually heated by a stove topped with stones. The air inside the sauna is very hot and dry, although sauna bathers periodically add water to the stones to produce a vapor known as 鈥渓oyly.鈥�

The sauna鈥檚 place in Finnish life

Sauna use is deeply embedded in Finnish culture. A nation of 5.5 million people, Finland has as many saunas as television sets 鈥� around 3.3 million. Most of the saunas are in people鈥檚 homes, although they鈥檙e also standard amenities in offices and factories. Saunas are accessible to Finns of every walk of life, so it鈥檚 unlikely that the study participants who used saunas often were already at lower risk of dying early because they were better off socioeconomically.

The researchers also emphasize that the very nature of the Finnish sauna is designed to reduce stress. The sauna has been a gathering place for family and friends for centuries. And sauna etiquette, which frowns upon swearing or discussing controversial topics while bathing, is instilled in Finns during childhood.

In fact, Finns may spend even more time in the sauna than they do exercising. While most Finns visit a sauna at least once a week, only about half of Finnish men and a third of Finnish women between 18 and 65 , which recommend the equivalent of 30 minutes of moderate-intensity physical activity five days a week. The Finnish researchers suggest that saunas may provide some cardiovascular conditioning because the high temperatures can drive heart rates to levels often achieved by moderate-intensity physical exercise.

So is sitting in a sauna the equivalent of exercising? 鈥淚 don鈥檛 know that I would substitute a sauna for exercise. But exercising and then taking a sauna seems like a very healthy routine,鈥� Dr. Lee says.

If you want to try a sauna

Although saunas haven鈥檛 become a cultural institution in the United States, many gyms, Y鈥檚, Jewish Community Centers, and health clubs have them. If you鈥檙e intrigued about the prospect of ending your workout in a sauna and want to learn more about sauna etiquette or get instructions for building your own sauna, visit the .