adult
awake
bed
bedroom
bedtime
care
caucasian
chronic
dark
deprivation
difficulty
disease
disorder
emotional
evening
female
girl
health
home
indoors
insomnia
late
lifestyle
medical
mental
nap
night
people
person
pillow
portrait
problem
rest
sad
sickness
sitting
sleep
sleeping
sleepless
sleeplessness
stress
stressed
suffering
symptoms
time
tired
tiredness
upset
woman
young