Sauna suit

A sauna suit is a garment made from waterproof fabric designed to make the wearer sweat profusely during exercise.

Several healthy collegiate-level wrestlers died from hyperthermia while undergoing such a regimen that included restricted diet and fluid intake.

[10] The NCAA banned the use of sauna suits in 2013 ending what they called "a 10-year long dispute between sports sciences and coaches" after the wrestlers died.

The NCAA said the ban ushered in an era where safe minimum weights, class qualification and nutrition are guided by science, which some enthusiasts say improved the participation and quality of the sport.

[11] Additionally, a 2022 study by the British Journal of Sports Medicine found that wrestlers who participated in perspiration-induced dehydration were more at-risk for injuries during competition than those who didn't.