It intuitively makes sense that moderate exposure to a variety of stressors (resistance training, fasting, cold showers, sauna, sleep deprivation, etc.) forces your body to overcompensate, develop adaptations, and become more resilient.

This might lead to unhealthy behaviours and make people crippled. TBH this sounds like an old joke that a farmer almost taught the horse not to eat but it died for some reason when almost succeeded