Biological Clock Day 2018 is on Saturday, April 28, 2018: Biological Clock?

Saturday, April 28, 2018 is Biological Clock Day 2018. Biological Clock Day April 28 biological clock day May

Biological Clock?

I felt the clock start to tick at the age of 30. I have been divorced for 5 yrs and had no children during my marriage. But my clock ticks loud every day!

Why do women have a biological clock?

Why do women have a biological clock?

Many organisms have a biological clock. I could probably say all organisms do. A biological clock is just a cycle at which events happen in an organisms (events usually triggered by hormones).

A sleep cycle is due to the biological clock. If you wake up every day around 6:00 am without an alarm, that has to do with your biological clock. A woman's menstrual cycle relates to their biological clock.


what is phisiological body clock?

what is phisiological body clock?

Biological Clocks, internal physiological systems that enable organisms to live in harmony with the rhythms of nature, such as the cycles of day and night and of the seasons. Such biological “timers” exist for almost every kind of periodicity throughout the plant and animal world, but most of what is known about them comes from the study of circadian, or daily, rhythms. Circadian rhythms cue typical daily behavior patterns even in the absence of external cues such as sunrise, demonstrating that such patterns depend on internal timers for their periodicity.

No clock is perfect, however. When organisms are deprived of the external cues the world normally provides, such as light, they display a characteristic “free-running” period of not quite 24 hours. As a result, free-running animals drift slowly out of phase with the natural world. In experiments in which people are isolated for long periods of time, they continue to eat and sleep on regular, but increasingly out-of-phase, schedules. Such drift does not take place under normal circumstances, because external cues reset the clocks each day.

Light, particularly bright light, is believed to be the most powerful synchronizer of circadian rhythms. Recent studies on humans have shown that the amount of artificial indoor light to which people are exposed per day can resynchronize the body's cycle of sleep and wakefulness. People can inadvertently reset their body clocks to an undesired cycle by such activities as shielding morning light with shades and heavy curtains or by reading in bed at night by bright lamp light. Many organisms also make use of rhythmic variations in temperature or other sensory inputs to readjust their internal timers. When an internal clock's time is very different from the external time, complete resetting sometimes requires days. This phenomenon is well known to long-distance air travelers as jet lag.

Apparently, biological clocks can exist in every cell and even in different parts of a cell. Hence, an isolated piece of tissue removed from an organism—for example, the eye of a sea slug—will maintain its own daily rhythm but will quickly adopt that of the whole organism when restored to it.

Also on this date Saturday, April 28, 2018...