they are called daily schedule clocks
An animals internal control of natural cycles is called instinct. An animal will migrate towards water and food sources, as well as move away from any other creature that it considers a threat.
Biological cycles ;-)
Circadian rhythms are the light-dark cycles that daily govern the rhythmic changes in the behavior of people and animals. A biological clock governs these cycles and repeated disruptions to them can cause illness.
Biological
biochemical cycles connect biological, geological, and chemical aspects of the biosphere.
Biological Clock
A biological rhythm is a pattern followed regularly by an organism, or, in rhythm is you will. Generally speaking, they can be cycles as simple as sleeping at specific times of the day or as complex as the process of hibernation in animals that perform it. The key idea about biological rhythms is that they are cyclic changes in animal behaviour.
Menstrual cycles of women in prison Clocks and watches Swimming
biochemical cycles connect biological, geological, and chemical aspects of the biosphere.
Electric clocks that plug in the wall (not battery operated) are probably the most accurate timepieces you can buy. These clocks count the cycles of alternating current. This make it a digital like clock and the electric company adds or subtracts cycles every so often to make it exactly accurate.
the theory of birhythm claims that one's life is affected by rhythmic biological cycles, and seeks to make predictions regarding these cycles and the personal ease of carrying out tasks related to the cycles.
It regulates essential biological rhythms such as day/night cycles.