I have my DX Racer at a 90 degree angle with my neck on the pillow, and the monitor at the top of my eye line. Arms flat with deskpic.twitter.com/MMKGCbTjP9
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
I'll also add that this isn't perfect, and its best to get up every hour or so or at least do some hand exercises