Cold and Heat: Where the Evidence Is Strong and Where It Is Not
Sauna has population-scale data behind it. Cold exposure has enthusiasm, real mechanisms, and much thinner outcome evidence — and one interaction worth knowing.
Cold & Heat Exposure
Deliberate cold and heat are hormetic stressors: a controlled dose of something harmful in quantity, provoking an adaptive response. The sauna literature is considerably stronger than the cold plunge literature, which is worth knowing before buying anything. These pages cover both and are clear about which is which.
1article