I always knew you're supposed to get 8 hours of sleep, but didn't know how much it could impact your fitness levels! I feel kind of guilty now since I definitely rarely get 8 hours of sleep.
Thanks for the link blueberry. That really sounds like me. I travel alot and my sleep schedule is crazy. I really do crave fat and sugar when I'm sleep deprived. My magic sleep number is 7 hours though.