A National Sleep Foundation poll found that “cool room temperature was one of the most important factors in getting a good night’s sleep” with four-fifths of respondents saying that it was important to them.
The Director of Tokyo Fatigue and Sleep Clinic, Osami Kajimoto, told Shueisha on July 21 that the most optimal temperature range for sleeping is 22–24 degrees Celsius.
Also, this temperature range is the most optimal for the brain to relax and rest, said Kajimoto.
He explained that the brain is an important organ of the human body, and therefore requires other organs to provide nutrients and oxygen to it constantly. In order to protect the brain, the autonomic nervous system, which acts as a cue for the brain to obtain a stable supply of oxygen and nutrients, will continue to send instructions to various organs of the body….