Neuroscientists are studying the boundary between sleep and awareness, discovering various liminal states that help explain sleep disorders resulting from flawed sleep transitions.
Sleep is a crucial state that refreshes the brain and body, repairing tissues, clearing toxins, and solidifying memories, although its mechanisms are not fully understood.
You’ve started your journey into sleep, the cryptic state that you and most other animals need in some form to survive.
Author's summary: Exploring the brain's transition from wakefulness to sleep.