Sleep is pretty damn important for growing kids. 8 hours minimum. If you maximize your growth during this time, stay active and play a lot of sports like basketball, track, swimming, etc.
My suggestion for the rotator cuff thing is to sleep with a thicker pillow. This will balance out the weight so your head as well as torso isn't weighing down your shoulder.
Either that or teach yourself to move around when you sleep so you're never at one spot too long.
I move around a lot when I sleep, so I guess I have all those personality traits, huh?
Bryn, you get a lot of **** from MSN, don't you? I read a lot of MSN's stuff with the whole "signs she's into you" and "how sleeping shows who you are"...or whatever. Maybe not msn, but some similar thing.