Does a computer screen work as a lightbox?
I don't know if there is research on this, but if not, this might help. Natural daylight contains a wide range of light frequencies - hence the rainbow, when it's split up. At different times of day, ...
How to deal with oral habit?
I had the same problem, except my go-to was hard candy! The more challenging or exciting the project, the more candy I crunched. Can you say tooth decay, boys and girls? Not to mention the issues ...
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