On a related note, I once got a reading injury - I had a 45 min walk to work, and so tried reading a book on the walk. After a week of this, I had hurt my neck - your neck isn't really made for bobbing your head in a reading posture while walking :)
Also relatedly, I've experimented holding my phone higher than normal while reading from it, at almost eye-level. But I can't get myself into the consistent habit.
