You and me both, Welu. In gymnastics, the first time I pulled up to shoulder level in the rings was so intensive I couldn't pull up on anything else for the remainder of the lesson. The trick is, according to a stocky Asian guy with biceps the size of my quadriceps, to get the rings on the inside of your wrists instead of hanging on your palms or fingers.
Now I have a cold, so I feel like crap. And there's nothing like videogames to make you forget all about feeling like crap! When your entire attention capacity is focused on the shiny things on the screen, there's no room left for the thoughts "Man, I feel like crap" and so you don't feel like crap at all any more.