Why would our circadian cycle be longer than the amount of it takes the earth to revolve around its axis, yet? Well, that's a great question. I think it really is an intriguing mystery. A, but human beings have adapted to that by exposing themselves to light exposure. So if you avoid light in the evening, and you increase light exposure in the morning, your bodi's release meloton,. which is essentially the bio marker of the circadian system. And at the forbidden zone, the hormone of lorness, these are laderful ferries.