adult
alarm
awake
background
bed
bedding
bedroom
bedtime
care
caucasian
clock
dark
darkness
depression
disorder
disturbed
exhausted
health
home
illness
indoors
insomnia
lying
male
man
medical
mental
night
nightmare
person
pillow
pressure
problem
restless
room
sick
sleep
sleepless
stress
suffering
symptom
tired
trouble
unhealthy
wake
young