Sleep experts warn of circadian rhythm disruption from late bedtimes

Experts warn that the timing of sleep is as critical as its duration. Regularly going to bed after midnight can disrupt the body's natural circadian rhythm, which is the internal 24-hour biological clock responsible for regulating hormones, metabolism, and immune processes.

Disrupting this rhythm can interfere with essential sleep stages, including light, deep, and REM sleep. Even if an individual achieves eight hours of sleep, poor quality caused by interruptions can lead to morning exhaustion. Factors such as noise, light, high room temperatures, stress, alcohol, and late meals contribute to fragmented sleep.

Digital device usage before bed is a significant factor. The blue light emitted by screens can delay the release of melatonin, the hormone that signals the body to sleep. Additionally, the mental stimulation from social media and videos can prevent the brain from relaxing, making it harder to maintain a stable sleep-wake cycle.