• Like-cells combine to form organs which are part of systems within the body. There is a wisdom of design that assists in the formation and cooperation of each element. Cells do what they are programmed to do. A heart cell does not end up in the liver. There are over 200 types of cells in the human body. This wisdom underscores the rhythm of specified creation within the organism.
• All the while, cells are replicating themselves to replace and rebuild and keep the organ and system in function. The cells replace themselves at varying speeds, some very fast, some very slow:

                 small intestine epithelium                   2-4 days
                 stomach                                                 2-9 days
                 white blood cells                                  2-5 days
                 colon cells                                              3-4 days
                 cervix                                                       6 days
                 lungs alveoli                                          8 days
                 platelets                                                10 days
                 skin epidermis cells                             10-30 days
                 trachea                                                   1-2 months
                 stem cells                                               2 months
                 sperm                                                     2 months
                 red blood cells                                      4 months
                 liver cells                                                6 months -one year
                 fat cells                                                   8 years
                 skeleton                                                10 years
                 central nervous system                         lifetime
                 lens                                                          lifetime
                 oocytes (female eggs)                            lifetime

• Biological rhythms control much of the body's normal functions, including performance, behavior, sleep and endocrine rhythms. These functions are primarily regulated by the circadian clock, a cluster of nerves located on the hypothalamus in the brain. The circadian clock relies on environmental cues to regulate its function, primarily light cues from the day/night cycle. Abrupt shifts in routine, such as shift changes, or travel resulting in jet lag can alter the sleep cycle and have a detrimental effect on normal circadian rhythms. Additionally season changes, which are accompanied by a decrease in the number of daylight hours, can negatively impact the function of the circadian clock, primarily the secretion of melatonin to induce sleep. If the alterations in biological rhythms are strong enough they may lead to mood disorders including mild depression and seasonal affective disorder.
• Some cycles include breathing, respiration, circulation, reproductive, endocrine, waking/sleeping, energy, elimination, etc
• The topic is expansive. I invite you to explore as you desire.  What is necessary is that are multiple cycles occurring simultaneously.  Each is maintained naturally by the organism. But lack of self care will impact the rhythms and lead to dysfunction. So, take good care of yourself to support the proper rhythm and flow of all your elements.
• Biorhythm refers to the belief that three specific cycles, the physical, the emotional, and the intellectual oscillate in measurable durations. Each cycle is either in an elevated state or in a lower frequency state. The physical cycle is 14 days long. The emotional cycle is 28 days long. And the intellectual cycle is 33 days in duration. These moving waves cross a center line between high and low energy. When one is above the line moving toward the peak of the cycle then it is a good time to utilize that one in your moments. When it is below the line and descending then it is likely there are challenges afoot. There are times when all the cycles are up and there are times when all the cycles are down. One who follows their biorhythm pays attention and regulates their type of activity in accordance.  If this interests you access a free biorhythm calculator online or as an app. It is akin to following the energy of the planets with daily horoscopes. Another tool to help you flow with life in a larger way.