Introduction: in the cell, physiological processes depend on time and circadian rhythms. The synchronization of time, in childhood and old age, may be related to hyperbolic lines of force in Earth's magnetic field. Methods: in relation to childhood and old age, scientific papers on physiological hyperbolic curves, Earth's magnetic field and time were reviewed. Results: There are hyperbolic curves and circadian rhythms in physiology. In childhood the geological (clock) time is very short, while the psychological time is long, with rapid physiological processes. In old age the geological time (clock) is very long, while the psychological time is short, with slow physiological processes. The lines of force in a magnet and in the Earth's magnetic field are hyperbolic images that deform the surrounding space. There is the possibility of modifying the hyperbolic dimensions of a physiological process, when we act in its time and space of development. In this way it could serve in the treatment of diseases. Conclusions: regarding geological time (clock), in childhood the psychological and physiological times are dilated, while in old age they are contracted. At birth, a "long life biorhythm" appears in cellular physiology and this ranges from birth to death. This biorhythm in cellular physiology is hyperbolic because it synchronizes with the hyperbolic lines of force in Earth's magnetic field. If external stimuli are applied to modify the hyperbolic physiological curves, they tend to synchronize again to become hyperbolas as before.