psychophysiological insomnia

psychophysiological insomnia sleep disorder sleep difficulty restlessness nighttime anxiety stress fatigue mental health sleep disturbance circadian rhythm sleep cycle sleep quality sleep deprivation chronic insomnia sleep onset trouble falling asleep waking during night early awakening restless mind racing thoughts tension worry psychological stress emotional stress nervous system overthinking sleep disruption sleep hygiene relaxation techniques cognitive behavioral therapy mindfulness bedtime routine calming techniques stress management sleep improvement mental fatigue daytime sleepiness health impact sleep therapy sleep treatment sleep disorder evaluation sleep assessment sleep study sleep patterns sleep environment sleep awareness mental relaxation body relaxation restorative sleep recovery wellbeing nighttime rest sleep disorder management insomnia symptoms sleep challenge