Discuss 4 ways that the sleep of a baby is different from the sleep of an adult.

Sleep Cycles: Babies have shorter sleep cycles than adults. While an adult goes through a sleep cycle every 90 to 110 minutes, a baby's sleep cycle is only about 50 minutes. This means babies transition more frequently between light sleep, deep sleep, and REM sleep, which is why they wake up more often.

Amount of Sleep: Babies sleep much more than adults. Newborns sleep up to 16-18 hours a day, with periods of wakefulness lasting 1-3 hours. Adults, on the other hand, typically require 7-9 hours of sleep per night.

REM Sleep: Babies spend more time in REM (Rapid Eye Movement) sleep than adults. REM sleep is a stage of sleep where dreaming occurs, and it is thought to play a role in learning and memory. While adults spend about 20-25% of their sleep in REM, babies spend up to 50% of their sleep in this stage.

Sleep Patterns: Unlike adults who typically sleep in one long stretch at night, babies have fragmented sleep patterns. They wake up frequently for feedings, especially in the early months. Their sleep patterns begin to consolidate as they grow older, and by the age of 6 months, many babies are capable of sleeping through the night.