A Client Asks the Nurse to Describe Normal Sleep

A client asks the nurse to describe normal sleep. Which responses by the nurse are most accurate? Select all that apply.

A) The functions of sleep have been thoroughly researched and are well understood.
B) Changes in sleep patterns normally occur as individuals progress through the life span.
C) Humans have limited capacity to adapt to variations in sleep patterns.
D) There is no association between sleep and depression.
E) There is a wide range of sleep patterns among "good sleepers."