adult
awake
background
bed
bedtime
care
caucasian
chronic
concept
deficit
depression
deprivation
difficulty
discomfort
disease
disorder
dream
exhausted
exhaustion
fatigue
female
frustrated
health
illness
indoors
insomnia
lifestyle
loss
mental
night
person
pillows
problem
sad
sick
sleep
sleeping
sleepless
sleeplessness
sleepy
stress
suffering
symptom
tired
top
trouble
view
woman
young