The circadian rhythm, which is the internal biological clock that controls physiological functions over a 24-hour cycle, affects various systems and organs in the human body. Here I give you an approximate breakdown of some of these rhythms. It's important to note that these times are approximate and may vary among individuals:
- Highest gastric activity: 12 p.m. - 6 p.m.
- Highest intestinal motility: 6 a.m. - 8 a.m.
- Detoxification and cellular repair: 1 a.m. - 3 a.m.
- Filtration and purification: 5 p.m. - 7 p.m.
- Highest efficiency in gas exchange: 3 a.m. - 5 a.m.
- Lowest workload: 3 a.m. - 5 a.m.
Central Nervous System
- Highest alertness: 10 a.m. - 12 p.m.
- Highest strength and agility: 5 p.m. - 7 p.m.
- Melatonin production: 9 p.m. - 9 a.m.
- Cortisol production: 6 a.m. - 8 a.m.
- Highest release of immune system cells: Early in the night.
- Highest metabolic rate: 4 p.m. - 6 p.m.
- Highest: 4 p.m. - 6 p.m.
- Lowest: 3 a.m. - 5 a.m.
These circadian patterns are mostly synchronized by the suprachiasmatic nucleus of the hypothalamus, which receives information from ambient light through the retina. However, it is essential to note that these are generalized values and may vary depending on the individual, their lifestyle, their health status, and other factors.