By Maureen Salamon from WebMd.Com 2020
Have you ever woken up to bright morning skies feeling energized? A big reason for your mood is the high-intensity blue light coming from the sun. Among the visible light spectrum, blue wavelengths have the most powerful effect on your sleep-wake internal body clock.
Both natural and artificial blue light can boost your alertness and mental sharpness. But too much of it may keep you awake when your body needs to wind down.
Sunlight
Need help waking up in the morning? Open the blind or get outside to feel more alert.
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