body clock

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Related to body clocks: Biological clocks

body clock

n.
An internal mechanism of the body that is thought to regulate physical and mental functions in rhythm with normal daily activities.

circadian rhythm

physiological variations over 24 h, generated by a 'clock' in the brain (nerve centres in the hypothalamus, with input from the eyes); normally synchronized to the light-dark cycle, but effective even in conditions without cues from light or time. Influenced by the hormone melatonin from the pineal gland. Circadian means 'about a day'. Variables affected include body temperature, alertness and sleepiness, urine output, cortisol secretion. See also jet lag.
References in periodicals archive ?
During this time scientists showed that an evening dose of caffeine slowed the body clock by 40 minutes.
TEHRAN (FNA)- Scientists discovered what amounts to a molecular reset button for our internal body clock.
SCIENTISTS at McGill University and Douglas Mental Health University in Canada have developed a drug that resets the body clock.
The body clock drives huge changes in the human body.
The UK Body Clock Network are offering all women over 30 a Body Clock Test at centres across Britain to check their future fertility.
And once altered, that body clock can be difficult to change back - as parents find out when, with their first child being looked after by relatives, they attempt to sleep in after having a late night.
The research carried out by Professor Foster showed that, from the age of ten, our internal body clocks shift, so its good for young people to stay in bed.
Indeed, he told Science News, "trying to engage socially at a time their body clock is telling them to sleep may exacerbate their [psychosis].
Gloomy days upset people's internal body clocks and can rob people of their energy, enthusiasm, appetite control, and sex drive.
Maybe it has something to do with their body clocks and playing at an hour many of them would be in bed.
Upcoming research will focus on how the brain centers that control various body clocks communicate with each other, Dr.
The Football Association of Wales has decided not to tamper with their players' body clocks by keeping them on Greenwich Mean Time throughout their 60-hour stay in the country.