Sleeping on copper does not stabilize body temperature at 37.5°C due to its high thermal conductivity, which can increase heat loss in cooler environments. The body's ability to maintain a constant temperature relies on energy balance, influenced by external factors like room temperature and insulation. There is no scientific evidence supporting the idea that copper sheets release negative ions that would enhance well-being, suggesting that such claims may be unfounded. The discussion highlights skepticism towards purported health benefits associated with copper, likening them to pseudoscientific claims. Overall, using copper for sleep may not provide the expected thermal stability or health benefits.