Rest
Rest was a period of inactivity or relaxation in order to recover energy.

In 2268, Captain James T. Kirk told a group of orphaned children that they could use some rest after having a busy day. ()

According to Doctor Beverly Crusher in 2364, cell division in single-celled lifeforms, at least organic ones, was preceded by a resting state. ()

See also 
 Rest and relaxation
 Sleep

Recreation