All living organisms – and consequently also the human being – are swinging in the rhythm of inner and outer time bases. The climate, the seasons, the sun and the moon as well as the particular time of the day have an influence on our body. One of the most important time base for us is the change from light-day-alertness-stress to darkness-night-sleep-recreation.
The outer time bases are mostly of electromagnetic quality that are coupling into our bio-electricity, like the natural magnetic field of the earth, for example. Meanwhile, this is scientifically approved as “biological regulative factor” and is essential for all biological systems. Just like the (sun-) light, that is nothing else than electromagnetic oscillation in visible range. It is assumed that electromagnetic impulses in the invisible range are playing an important role for our inner clock, since it was observed that the inner clock of blind people is largely working synchronous to the one of all other people. In the sixties a surprising finding was made: blind people, who got glass eyes instead their seemingly useless eyes, lost their usual daily rhythm. They kept their normal change of phases of sleep and alertness to a large extent, but altogether, their day got mostly a bit longer than 24 hours.
A variety of psychological and physiological indicators is changing rhythmically. Well known examples are pulse and breathing, the change of body temperature or the blood pressure during the 24 hours of a day or the 28-days-menstruation-cycle of a woman. Some rhythms are only applying to some organs or apparatus. The outcome of this is the so called “organ clock” of the Traditional Chinese Medicine (TCM), that shows the rhythmic activity-cycles of the single organs in a time pattern.
With healthy people, the different rhythms are in line with each other and have a harmonious interaction – just like the musicians of an orchestra. The body temperature, for example, rises considerably at the end of the nightly sleeping phase until shortly before waking up. That gives a feeling of alertness in the early morning. On the other hand, in the evening the body temperature is diminishing and by that is preparing the organism for sleep. That is why we are not able to sleep well and recreative in a room where the temperature is too high. Also, most people experience a decline of the body temperature between 2 p.m. and 4 p.m.. That explains the fact, why tiredness and along with that a decline in output is often occurring in the afternoon. Also, the risk of accidents is rising in this period of time statistically verifiable.
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