light

therapy

insomnia

person

chronic

problem

remaining

passively

awake

difficulty

falling

asleep

night

stimulus

control

relaxation

eating

late

evening

travel

work

schedule

sleep

ongoing

stress

paying

attention

focusing

remembering

short

term

restriction

irritability

depression

anxiety

feeling

tiredness

sleepiness

early

worry

icon

motion

animation

hd

animated