Several months ago I bought an external keyboard for my laptop because I was getting really sore wrists and arms from being lazy and letting my arms rest on the laptop. The edges were pressing into my arms and making them sore and numb. The external keyboard along with a wrist rest fixed that problem but created another one. In order to use my keyboard, I had to push my laptop back an additional foot or so. As a result, I was consistently getting headaches from straining to read the screen.