Body Temperature Control
Lowering body temperature by one to three degrees can enhance sleep quality. Taking a hot shower or using a sauna briefly can cool the core body temperature, especially when followed by a rinse with lukewarm water. However, cold showers or ice baths are invigorating and should be avoided late in the day if restful sleep is the goal.In this clip
From this podcast

The School of Greatness
"DO THIS Everyday To Master Your Sleep & Be More FOCUSED" | Andrew Huberman & Lewis Howes
Related Questions
What timing should I shoot for when taking a hot shower or bath before bed to help lower my body temperature for sleep, as discussed in the Huberman Lab Podcast episode "Maximizing Productivity, Physical & Mental Health with Daily Tools | Huberman Lab Podcast #28" and the clip "Sleep and Temperature"?
What timing should I aim for when taking a hot shower or bath before bed to help lower my body temperature for sleep, as discussed in the Huberman Lab Podcast episode "Maximizing Productivity, Physical & Mental Health with Daily Tools | Huberman Lab Podcast #28" and the clip "Sleep and Temperature"?