Japanese researchers are conducting experiments to explain the phenomenon of 'totonou' — the state of euphoria and mental clarity many experience after a sauna. This verb has become a cultural phenomenon in recent years, especially within the sauna-loving community.
The research focuses on measuring physiological and neural responses as the body undergoes sudden temperature changes — from the hot sauna room to a cold water bath. Scientists hope to uncover the precise mechanisms behind this deep relaxation and heightened concentration.
A team at Waseda University has used EEG equipment to record brain activity in volunteers during and after sauna sessions. Preliminary results show an increase in alpha waves — associated with a relaxed yet alert state — persisting for up to 30 minutes after the session ends.
Experts suggest that understanding 'totonou' could help develop new therapies for anxiety and insomnia, while enhancing the sauna experience already popular in Japan. The phenomenon has drawn the attention of international researchers in neurology and psychology.
Sauna bathing is not just a relaxation ritual but is also considered a method to improve mental health, as evidenced by the spread of the concept 'totonou' across Japanese media and social networks in recent years.
