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Getting natural light in the morning helps synchronize the body's circadian rhythm, the internal system that influences sleep and wakefulness throughout the day.
Morning light signals that daytime has begun and helps regulate the timing of melatonin, a hormone involved in sleep. Regular exposure to daylight can therefore support a more consistent sleep-wake schedule.
Indoor lighting is generally much dimmer than outdoor daylight, even when a room looks bright.
Quick takeaway: Spending some time outdoors after waking can help the body recognize when the day has started.
© Sleep Foundation