It was not meant to keep time over a longer period of time. Most of new cars come with a spare tire which is smaller in size. It is meant to be used, in case their tire has to puncture, to go to the nearest service station to get the main one fixed. For example, the body clock sensed the day more than 24 hours. There are other diseases that are influenced by the circadian rhythm disturbances.
Classical depression has a daily rhythm.
It worsens in the morning and improves in the evening. The result of this swing is the appearance of mood swings, along with insomnia or disturbed sleep patterns. Today, classical depression is often treated with drugs which exert an influence on circadian rhythms. Research is being carried out to determine the effectiveness of treating it with light therapy. Menstrual disturbances in women, such as irregular menstrual cycles or premenstrual syndrome are further examples of disturbances in the body's biological clocks.