Cold Showers May Improve Sleep
Quality sleep in closely linked with the body’s core temperature. This is due to a region of the brain called the suprachiasmatic nucleus (SCN), which functions as an internal clock for the body. As night time looms, the SCN sends out cooling signals to the rest of the body, lowering the body’s core temperature. This then changes key internal processes within the body, namely an increase in melatonin, which is ‘the sleep hormone’ secreted by the pineal gland.
Manufacturing a cooler body temperature using a cold shower 1 hour before bed prepares the body to ready itself for sleeping and may boost melatonin. For me it has a real calming effect and really helped with my sleep.