AP PSYCHOLOGY

Detailed explanation-1: -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.”

Detailed explanation-2: -(sir-KAY-dee-un RIH-thum) The natural cycle of physical, mental, and behavior changes that the body goes through in a 24-hour cycle. Circadian rhythms are mostly affected by light and darkness and are controlled by a small area in the middle of the brain.

Detailed explanation-3: -If this process alone was in control of your sleep/wake cycles, in theory you would have the most energy when you woke up in the morning. And you would be tired and ready for sleep at the end of the day. But your circadian biological clock causes highs and lows of sleepiness and wakefulness throughout the day.

Detailed explanation-4: -A typical circadian rhythm in humans is one where peak alertness is around 2-3 hours after awakening and 8-9 hours after awakening, and where fatigue is most likely at around 3 AM, if you wake up like most people do at around 7-9 AM in the morning. However, this rhythm is impacted by many factors and it can be shifted.