Changes

WASO (wake after sleep onset) is defined as an unwanted wake or waking period after sleep onset. By definition, sleep must continue after the wake in order for it to count as a WASO. A wake after sleep onset, after which sleep does not continue, is called a [[premature wake]].

WASO (wake after sleep onset) is defined as an unwanted wake or waking period after sleep onset.<ref name="Shrivastava" /> By definition, sleep must continue after the wake in order for it to count as a WASO. A wake after sleep onset, after which sleep does not continue, is called a [[premature wake]].

== Cause ==

== Cause ==