AP PSYCHOLOGY

Detailed explanation-1: -Circadian rhythm is the name given to your body’s 24-hour “internal clock.” This internal clock controls your body’s sleep-wake cycle.

Detailed explanation-2: -Circadian rhythms are 24-hour cycles that are part of the body’s internal clock, running in the background to carry out essential functions and processes. One of the most important and well-known circadian rhythms is the sleep-wake cycle.

Detailed explanation-3: -The circadian clock has an internally driven 24-hour rhythm that tends to run longer than 24 hours but resets every day by the sun’s light/dark cycle. Taking melatonina supplements can also shift the timing of the body’s “clock.” Some people use melatonina as a sleep aid: it has a mild sleep-promoting effect.

Detailed explanation-4: -Normal people have a circadian rhythm that is slightly longer than 24 hours. Every day, morning light and other behaviors reset the sleep-wake clock to a 24-hour schedule. Without light and this clock resetting, people’s sleep time will drift later and later.

Detailed explanation-5: -Humans live in a 24-hour environment, in which light and darkness follow a diurnal pattern. Our circadian pacemaker, the suprachiasmatic nuclei (SCN) in the hypothalamus, is entrained to the 24-hour solar day via a pathway from the retina and synchronises our internal biological rhythms.