Blue Light Can Improve Alertness and Attention Day or Night

Exposure to blue light can improve reaction times, attention and boost brain waves, according to a new study.

With so many people working indoors--and with natural light lacking in the winter months--a new study could have important implications for the design of artificial lighting.

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→ Jeremy Dean is a psychologist and author of PsyBlog. His latest book is
"Making Habits, Breaking Habits: How to Make Changes That Stick"