Hypnos (Ancient Greece)
In ancient myth, Hypnos personified sleep. While not a scientist, his mythic presence framed early cultural understandings of sleep as a restorative force. The idea that sleep holds healing and transformative power set the stage for later inquiries into the rhythms of the body and the brain.
Key takeaway: sleep as a precious reset ritual woven into the human experience, long before empirical science could quantify it.