circadian rhythm

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Related to body clock: biological clock

circadian rhythm:

see rhythm, biologicalrhythm, biological,
or biorhythm,
cyclic pattern of physiological changes or changes in activity in living organisms, most often synchronized with daily, monthly, or annual cyclical changes in the environment.
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circadian rhythm

[sər′kād·ē·ən ′rith·əm]
(physiology)
A self-sustained cycle of physiological changes that occurs over an approximately 24-hour cycle, generally synchronized to light-dark cycles in an organism's environment.
References in periodicals archive ?
Young people's body clocks alter as they enter the teenage years, meaning they often have a tendency to stay up late but then struggle to get up in the morning.
The academic believes that it is the first time that the body clock has been studied in the context of individual skin cells and how efficiently they respond to injuries.
The researchers claim their findings demonstrate how controlling blood sugar levels could help to synchronise our body clock with the time at your destination.
Czeisher concluded by saying, "For the students whose sleep and wake times were inconsistent, classes and exams that were scheduled for 9am were therefore occurring at 6am according to their body clock, at a time when performance is impaired.
When we disrupted the body clock in either cells or mice, we found that the timing of infection no longer mattered -- viral replication was always high.
The experiment was repeated in mice lacking the gene Bmal1, which helps control the body clock, and they found high levels of virus replication regardless of the time of infection.
The internal body clock has evolved to expect a 24-hour day, not the 24.
For this reason, shift workers find it difficult to balance their work with their internal clock, says Roenneberg: For example, after a night shift larks sleep for much shorter periods than owls because their body clock is set for activity.
DX", which tests the accuracy of the user's internal body clock.
Body Clock needs to be read carefully: one suggestion read through it first rapidly perhaps or skipping and then focusing on particular sections letting it wash over you much as you would a live music performance.
One, they will get a wee bit longer in their bed, two they will beat the rush hour traffic and three, I'm into training closer to the match time because I think your body clock gets used to it.