Why Some People Are Wired to Wake Up Early, According to Experts
16th June 2026
If you’ve ever wondered why some people can wake up before sunrise without an alarm while others struggle to get out of bed on time each morning, the answer lies in biology. Our circadian rhythm, also known as our internal body clock, largely influences our natural sleep-wake preferences, known as chronotypes.
That doesn’t mean your daily habits don’t matter. Light exposure, regular exercise, and consistent sleep schedules can also influence when you feel tired and when you wake up, our experts reveal. But for some people, rising early comes more naturally than it does for others. To better understand why some people are early risers—and whether night owls can shift their schedules—we asked sleep experts to explain the science behind it.