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Reviewed in the United States on February 16, 2017
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Natural full-spectrum light is vitally important, and this book does an excellent job in telling you
how and why this is important for overall health.
Most people don't know how detrimental artificial light can be, and how it affects our immune system,
emotions, and health.
Highly recommend to everyone.
how and why this is important for overall health.
Most people don't know how detrimental artificial light can be, and how it affects our immune system,
emotions, and health.
Highly recommend to everyone.
One person found this helpful
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Product Details
4.7 out of 5 stars
4.7 out of 5
306 global ratings
