While all energies flow throughout the body at all times, there are periods when certain energies are stronger than at other times. As is true of the five energetic seasons and with the cycle of life (as with the five 15-year cycles), it is also the case every day since every two hours one of the energies become more active within your body.
The cycle repeats itself every twenty four hours. This is called the “diurnal energy cycle.”
There are five elements and each has a pair of organ meridians accounting for the energies of the ten organs. In addition, there are two other meridians, the heart constrictor (also called the pericardium) and the triple warmer, both of which belong to the Fire element.
Altogether they represent the twelve major energy meridians of the body. The energy flows within the meridians, but also from one meridian to another creating an endless loop.
Of course, the flow has a set pathway and increases its activity according to a set sequence and time frame which goes as follows:
1. 1-3 am: liver energy
2. 3-5 am: lung energy
3. 5-7 am: large intestine energy
4. 7-9 am: stomach energy
5. 9-11 am: spleen energy (also pancreas for its organic function)
6. 11 am-1 pm: heart energy
7. 1-3 pm: small intestine energy
8. 3-5 pm: kidney energy
9. 5-7 pm: bladder energy
10. 7-9 pm: heart constrictor (pericardium) energy
11. 9-11 pm: triple warmer energy
12. 11 pm-1 am: gallbladder energy
This realization has led some doctors to recommend taking medicine for certain organs during the peak of their energetic activity. This is called chronotherapy (from the Greek chronos meaning time). Chronotherapy has found a certain degree of recognition by medical doctors in the West.
This phenomenon also explains why travelers going through several time zones in a short time suffer from jet lag. It does not have as much to do with the plane as it does with the fact that the process forces the body to alter the time frame of its energetic flow in order to adapt to new time zones.
The more a traveler suffers from energetic blockages, the more difficult it will be for the body to make a prompt adjustment. For this reason, travelers going from east to west or vice versa over several time zones, should plan on an energy balancing session before taking a long flight and also before tackling major tasks once arrived at their destination.
It makes particularly good sense to work on the energies that have been affected, given the time frame of the travel.
Yin and yang wax and wane. For example, in the diurnal cycle of the world outside the body, yang starts growing stronger after midnight and by dawn it dominates over yin, continuing to grow until it reaches a peak at noon, then declines and gives way to yin which gains ascendancy after dark and peaks at midnight. A similar cycle is thought to exist in the human body, with the body rising in vigor from dawn and turning passive after dark. The seasons likewise see yang growing rapidly in early spring and reaching a peak in mid-summer; by the autumn yin is ascendant and finally reaches a maximum in winter.
–Hong, Hai. Principles of Chinese Medicine: A Modern Interpretation. Second ed. ICP Publications. 2015. Print.