Discover 5 processes your circadian rhythms help regulate

Circadian rhythms are in-built mechanisms that every human has. They function on a 24 hour clock to help regulate a variety of physiological processes and behavioral patterns. Most notably, the circadian rhythm regulates the sleep-wake cycle alongside body temperature fluctuations and hormone secretion (not all, but some hormones).

Let’s take a closer look at circadian rhythms and their roles in regulating processes within the human body.

Sleep-wake cycle

The circadian rhythm influences your natural sleep-wake patterns through a hormone called melatonin. The pineal gland secretes melatonin when it gets dark in the evenings, preparing you for sleep. Melatonin production decreases when the body perceives sunlight, enabling you to wake up in the mornings.

Body temperature

Your circadian rhythm affects your body temperature, too. The lowest measurement of your body temperature usually occurs during the night and reaches its peak at some point during the daytime. Temperature variation influences your alertness, concentration and sleepiness.

Hormone secretion

Various hormones, including cortisol, melatonin and growth hormones, are produced and released in a cyclical manner throughout the day. This is regulated by your circadian rhythm.

Metabolism

Your metabolism and digestion are influenced by the circadian rhythm. Eating patterns aligned with your natural circadian clock can have a positive impact on metabolic health.

Mood and cognitive function

The circadian rhythm can influence mood, cognitive function and overall mental wellbeing. Disruptions to the circadian rhythm, such as those experienced during jet lag or shift work, can lead to mood disturbances and cognitive deficits.