There is actual an obvious point… Everytime you wake up in the morning. Some work detecting it as well for medical reasons https://www.science.org/doi/10.1126

There is actual an obvious point… Everytime you wake up in the morning. Some work detecting it as well for medical reasons https://www.science.org/doi/10.1126/scitranslmed.3006294 https://www.science.org/doi/10.1126/scitranslmed.3006294