Introduction
Circadian rhythms are 24-hour internal rhythms that regulate the sleep-wake cycle, hormone release, body temperature, and other physiological processes. The master clock is located in the suprachiasmatic nucleus of the brain.
Circadian Disruption
Jet lag occurs when travel across time zones desynchronizes the internal clock. Shift work disorder affects people who work during the natural sleep period. Social jet lag results from misalignment between social schedules and natural sleep timing.
Maintaining Healthy Rhythms
Consistent sleep and wake times, exposure to morning light, regular meal timing, and limiting light exposure before bed support healthy circadian rhythms.
Conclusion
Circadian rhythms are fundamental to health, and their disruption has significant consequences for sleep, metabolism, and well-being.