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Awake at 3 a.m.? Why falling asleep in front of the TV could be to blame
Tom's Guide • • health
Key Points:
- Nighttime anxiety and waking up at 3 a.m. are often caused by a "temporary second wind of energy," triggered by ignoring natural sleep cues and staying awake later than the body needs.
- Staying up past your natural bedtime activates the brain's alertness systems, releasing wakefulness hormones like cortisol, norepinephrine, dopamine, and orexin, which can cause the "tired but wired" feeling.
- Elevated cortisol levels before bedtime amplify the natural early-morning cortisol rise, increasing the likelihood of waking up around 3-4 a.m.
- Key habits that contribute to middle insomnia include working late into the evening, consuming caffeine in the afternoon, and falling asleep briefly in front of the TV, which reduces sleep pressure and disrupts nighttime sleep.
- Experts emphasize the importance of recognizing true sleepiness—signaled by eyelid heaviness and reduced alertness—rather than mere tiredness, to better align with the body's natural sleep window and avoid sleep disruptions.
