A circadian rhythm is a natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.It can refer to any biological process that displays an endogenous, entrainable oscillation of about 24 hours. These 24-hour rhythms are driven by a circadian clock, and they have been widely observed in plants, animals, fungi, and cyanobacteria.
'Circadian rhythms' are elucidated as the physical as well as behavioral and cognitive changes that accompany a daily cycle which is basically a response to the darkness or sunlight that modulates in the environment and our body also modulates its behavior as per this circadian clock.
As per the question, '<u>circadian rhythms</u>' would be described as the daily physiological processes or cycles that control the organism's sleep/wake cycle, blood sugar level, body temperature, etc. Such changes are regulated as per the circadian clock which is directly influenced by external cues like sunlight, temperature, etc. A healthy organism must possess these rhythms normally as <u>abnormal circadian rhythm leads to diseases like obesity, sleep disorder, diabetes, etc.</u>
