Circadian Rhythms

Definition

Circadian rhythms are natural cycles in the body that follow a roughly 24-hour period and affect various physiological processes, like sleeping and eating patterns.

Scientific / Technical Definition

Circadian rhythms are endogenously generated rhythms with a frequency of about 24 hours. These rhythms are driven by an internal biological clock located in the suprachiasmatic nucleus of the brain's hypothalamus. They regulate many physiological processes such as sleep-wake cycles, hormone release patterns, and eating habits.

Benefits

• Regulation of sleep cycles
• Improved metabolic health
• Enhanced cognitive function
• Synchronization of hormone levels

Examples

• Sleep-wake cycles that align with nighttime sleeping
• Hunger patterns that align with daytime eating
• Energy levels that peak during daylight hours

Additional Information

• Effects: Circadian rhythms influence various aspects of human health, including sleep quality, mood regulation, digestion, and cell regeneration.

Related Terms

• Melatonin
• Sleep Cycle
• Biological Clock
• Nutrient Timing

References

• Circadian Rhythms: Basic Neurobiology and Relevance to Cardiovascular Disease
• The Importance of Circadian Rhythms for Health