Do you wake up between 3am and 5am? The reason is more significant than you think
Waking up in the middle of the night between 3:00am and 5:00am is a frustrating experience many people share. Despite going to bed on time, they find themselves suddenly alert, unable to return to sleep, and left groggy by morning. What’s more intriguing is how common—and possibly significant—this specific window of wakefulness is. Historically, this…