How does sleep change as a person ages, from infancy to old age?

Question

Quizplus · Accepted Answer

As a person ages from infancy to old age, the total amount of sleep gradually decreases, with infants requiring up to 16-18 hours of sleep a day, while older adults may require only 5-6 hours. Additionally, the amount of REM sleep decreases, with infants spending up to 50% of their sleep in REM, while older adults spend only about 20%. Non-REM sleep also changes as a person ages, with less time spent in deep stages of sleep and more time spent in lighter stages.

How Does Sleep Change as a Person Ages, from Infancy