Related by context. Frequent words. (Click for all words.) 56 insomniacs 53 sleep 51 insomnia 51 sleep deprived 51 unmedicated 49 snorers 49 migraine sufferers 48 sleepers 48 chronic insomnia 47 journal Sleep 46 snore 46 adolescents 46 excessive sleepiness 46 brain shrinkage 45 appetite suppressants 45 obese adolescents 45 wakeful 45 sleep disturbances 45 dysmenorrhea 45 schizophrenics 45 sleepless 44 placebo controlled trials 44 naps 44 insomniac 44 menstrual pain 44 hypokalemia 44 pregabalin 44 nap 44 restless legs 44 snored 44 Ambien CR 44 adolescent males 44 hot flushes 44 abstinent 44 perimenopausal 43 prescribed antidepressants 43 baclofen 43 cognitive behavioral therapy 43 Sedentary 43 erections 43 menstruate 43 daytime sleepiness 43 sleepiness 43 clinically depressed 43 decreased libido 43 nausea fatigue 43 impaired fasting glucose 43 stimulant medications 43 caffeinated beverages 43 snooze 42 doze 42 catnaps 42 caffeine 42 sleeplessness 42 cortisol levels 42 tricyclic antidepressants 42 depressive symptoms 42 inhaled steroids 42 sleep inducing 42 bedtime 42 sleep deprivation 42 citalopram 42 sleep disorders 42 abstainers 42 heavy menstrual bleeding 42 ADHD symptoms 42 anticonvulsants 42 exercisers 42 premenstrual syndrome 42 vitamin D deficient 41 systolic blood pressure 41 attention-deficit/hyperactivity disorder 41 headache sufferers 41 narcolepsy 41 restful sleep 41 syncope 41 antihypertensive medications 41 pathological gamblers 41 colicky 41 snorer 41 Clinical Psychiatry 41 ambulation 41 loud snoring 41 ziprasidone 41 Rozerem 41 anticholinergic 41 aripiprazole 41 Clinical Endocrinology & 41 inducers 41 shuteye 41 Melatonin 41 antidepressant medications 41 awake 41 nocturia 41 menses 41 Narcolepsy 41 chronic constipation 41 fatigue nausea 41 amitriptyline 41 erectile dysfunction 41 bed wetting