AP PSYCHOLOGY

Detailed explanation-1: -Circadian rhythm is the 24-hour internal clock in our brain that regulates cycles of alertness and sleepiness by responding to light changes in our environment. Our physiology and behavior are shaped by the Earth’s rotation around its axis.

Detailed explanation-2: -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-3: -These repeating 24-hour cycles are called the circadian rhythm. Your body tries to align your sleep-wake cycle to cues from the environment, such as when it gets light or dark outside, when you eat, and when you are physically active.

Detailed explanation-4: -The circadian rhythm acts as each person’s internal clock. It operates in humans on a 24-hour cycle and affects various biological processes throughout the day, such as sleepiness, peak exercise potential, body temperature, and blood pressure.

Detailed explanation-5: -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.