If I play Solitaire on the computer and felt the repetitive dragging of cards using mouse game after game effected my hand and arm and I experience pain later when I went to bed. I avoid the computer for a couple hours before bedtime and sleep well, so I repeat this. Carpel Tunnel has entered my mind about this. Interested in others' experiences. I typed out a lengthy reply on e-mail to DD using my one hand and I had pain that night also.