Can stress disrupt normal sleep cycles?

Stress can make it harder to fall asleep, increase nighttime waking and reduce the feeling of restorative sleep. Stress hormones and racing thoughts keep the brain alert when it should be winding down. Even if total time in bed remains unchanged, sleep may become lighter or more fragmented. Chronic stress can also lead to irregular schedules, increased alcohol or caffeine use and more evening screen time, all of which can worsen sleep. A consistent routine, physical activity, relaxation exercises and writing down concerns before bed may help. Avoid trying to force sleep, as this can increase frustration. If stress-related sleep problems continue for several weeks or significantly affect daily functioning, professional support may be helpful.