Researchers at the Rensselaer Polytechnic Institute in the Lighting Research Center have discovered a way to combat the drowsy feeling often experienced in the afternoon (known as the “post-lunch dip”) using a novel method: exposure to visible light.

For years, researchers have known that exposure to certain wavelengths of visible light helps prevent production of melatonin, a chemical responsible for drowsiness. …

Read the rest (so to speak) at: Using Light Exposure to Combat the “Post-Lunch Dip”

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