Vince likes to sleep in and go to bed well past midnight. He finds it takes him a long time to feel like he's ready for his day after waking up and feels as though he is at his most productive in the evening. On the other hand, his friend Francesca gets up super early and always feels energized the moment she gets out of bed. She usually starts to feel drowsy shortly after the sun goes down and rarely stays up late. This difference in Vince and Francesca may be regulated by biological cycles called

Question

Quizplus · Accepted Answer

Circadian rhythms are 24-hour cycles that are part of the body's internal clock, running in the background to regulate cycles of sleepiness and wakefulness, which explains the differences in sleep patterns and energy levels between Vince and Francesca.

Vince Likes to Sleep in and Go to Bed Well