Sauna culture has taken off in Minnesota. Here’s why

Ed Kranz set up his mobile sauna next to a frozen beach at Lebanon Hills Regional Park in Eagan, Minnesota, on a bone-chilling Sunday morning during a weekend cold snap.Ed and his wife Colleen own Saunable, “a wood-fired sauna experience on wheels.” After about 8 to 12 minutes of sweating in the Kranz’s 185 degrees Fahrenheit (85 degrees Celsius) sauna, a group moseyed outside into a 15-degrees Fahrenheit (9 degrees Celsius) Minnesota afternoon. They sat around a fire in bathing suits to...