On our last trip. I knew that my right shoulder was locking up and that I should avoid over use of my arm. Being right handed I just couldn't help using my right hand to push the draw and deal buttons for VP. It doesn't help being short and having to stretch my arm to reach the buttons. I even tried holding my arm behind my back and using my left arm. Then I'd forget. I had quite a lengthy number of sessions with the physio when I got home.