Sleep is probably my favorite activity. No, you'll never see this in my CV! I realize you can't really get much done while your sleeping, except maybe exercise your subconscious, but it is invigorating. When you're asleep, your worries and troubles seem far away. It's a good recipe for illness, love sickness, hunger, and anger (at least for me). Sleeping is definitely one of my Joys of Life.
Photo Credit: Seraphics, Jedi Jack, Untitled, Natasha Mmyran, Stupidsht, Miss Killer, and Hanna Marie