The research builds evidence that the heart is one of the brain's important timekeepers and plays a fundamental role in our sense of time passing—an idea contemplated since ancient times, said Adam K. Anderson, professor in the Department of Psychology and in the College of Human Ecology (CHE).

"Time is a dimension of the universe and a core basis for our experience of self," Anderson said. "Our research shows that the moment-to-moment experience of time is synchronized with and changes with the length of a heartbeat."

https://medicalxpress.com/news/2023-03-wrinkles-linked-heartbeat.html