In this first episode, we journey from ancient speculation to the groundbreaking 19th-century experiments that shattered myths and established the existence of our internal 24-hour biological clock. We explore the meticulous work of Gierse, the coordinated rhythms discovered by Baerensprung, and the dramatic self-experiment by Mosso that proved our internal clocks can't be ignored.

For the original source material, references, and further discussion on this topic, visit:

https://ultradianflow.com/science/season-1/chapter-1-birth-of-biological-clock/