I accused my DW of writing under the name of "MSHappyCampers" because this is EXACTLY the same sort of question she would ask.
She once turned to me and asked, "If birds fell asleep when the were sitting on a tree branch, would they fall off?" She was ELATED a few years later when she saw a program on TV that answered that question. Their muscles are arranged so that when they clench the tree limb, they are "locked" into place.
Traveling America In