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A light box can be useful for more than seasonal affective disorder. It has been recommended for use as an add-on treatment for depression. It can also help shift your body clock. This video shows you how to use a light box.
There are many commercial brands available, the one in the video is a Phillips Golyte. Here is the link to an updated version of this one: https://amzn.to/2OxFjK9
Another popular brand is litebook.com They have very helpful educational information on light therapy.
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