Everybody has heard this said to them at one point in life or another: “Stop biting your nails!” Typically from mom. Believe it or not there is a lot of science behind the habit mom hates the most.
SiOWfa15: Science in Our World: Certainty and Controversy
The course website and blog for the Fall 2015 instance of Penn State's SC200 course
I find this blog to be very funny because that is something I’ve constantly heard from my mother as a child growing up. Here’s an article on some negative aspects of biting your nails http://articles.mercola.com/sites/articles/archive/2014/07/26/nail-biting.aspx I wonder if certain things we do tie into our emotions. Have you considered if biting your nails ties into being nervous? I feel that this is an interesting topic and can highlight many things.