Saunaty

A renegade revival of Finland's hot-and-cold rite. You'll enter a wood-fired sauna heated past 200°F where sweat flows and the noise of the world slips away — then plunge into the lake's black-glass bite or a tub stacked with frozen shards. Hot. Cold. Repeat. Strangers emerge a tribe, tempered by steam and steel-water. 75-minute communal sessions, beachside in Spring Lake.