What factor can disrupt circadian rhythms?

Excessive light exposure at night is a well-documented factor that can significantly disrupt circadian rhythms. Circadian rhythms are influenced by environmental cues, with light being one of the most potent signals. The presence of light, particularly blue light emitted by screens and artificial sources, can inhibit the production of melatonin, the hormone responsible for regulating sleep-wake cycles. This disruption can delay sleep onset and affect sleep quality, leading to misalignment of the body's natural circadian clock.

In contrast, a regular sleep schedule, consistent meal times, and meditation before sleep are all practices that promote a stable circadian rhythm. A regular sleep schedule helps reinforce the body's natural sleep-wake cycle, while consistent meal times can further synchronize internal biological processes. Meditation can aid relaxation and improve overall sleep quality, contributing to maintaining a healthy circadian rhythm.