Chronobiology and circadian rhythm
The circadian rhythm is essentially the body's internal clock. It is an integrated biological rhythm that follows a cycle of approximately 24 hours and regulates various physiological processes such as sleep and eating.
- 6:45 Greatest increase in blood pressure
- 7:30 Cessation of melatonin secretion
- 8:30 Likely bowel movement (reactivated intestine)
- 9:00 Highest testosterone level
- 10:00 Maximum state of alertness
- 14:30 Best coordination
- 15:30 Best reaction speed
- 17:00 Best cardiovascular efficiency and muscle strength
- 18:00 Highest body temperature
- 18:30 Highest blood pressure
- 21:00 Start of melatonin secretion
- 22:00 Interruption of intestinal movements
- 2:00 Deepest sleep
- 4:30 Lowest body temperature