I've hurt my knee

Nothing beats playing WoW while trying to recover from some injury or sickness; personally I think it's almost therapeutic! Works better than Steaming Chicken Soup I tell you!*
Feeling relaxed and having loads of fun when you’re not allowed to move around very much makes lying in bed or sitting in a chair for long periods of time much more bearable.

* - Not an actual Murloc doctor, and no actual proof.