The term circadian refers to a cycle that occurs roughly every 24 hours, such as the sleep-wake cycle or the hormonal rhythms in our bodies. It comes from the Latin words for "around" (circa) and "day" (diem).
Usage examples
Understanding your circadian rhythm: By tracking your sleep patterns and energy levels throughout the day, you can gain insights into your circadian rhythm. For example, if you consistently feel sleepy around 2-3 pm, it might indicate a dip in your circadian alertness.
Setting a circadian-friendly sleep schedule: Maintaining a consistent sleep schedule by going to bed and waking up at the same time every day helps regulate your circadian rhythm. Avoiding screen time and bright lights close to bedtime can further support healthy sleep patterns.
Jet lag and circadian disruptions: When traveling across time zones, our circadian rhythm gets disrupted, leading to symptoms like grogginess, sleep disturbances, and decreased alertness. To minimize jet lag, gradually adjust your sleep schedule before the trip and expose yourself to natural light upon arrival.
Melatonin supplements for circadian disorders: Individuals with certain circadian disorders, such as delayed sleep phase syndrome, may benefit from melatonin supplements. Melatonin, a hormone that regulates sleep-wake cycles, can help shift the circadian rhythm to align with desired sleep patterns.
Circadian lighting for productivity: Adjusting the intensity and color temperature of artificial lighting to mimic natural light's patterns can enhance alertness and productivity. This circadian lighting design is often applied in offices, schools, and healthcare settings.