Sleep and Ankles

It never fails. I put my kids down and find myself yawning and nodding off on whosever pillow I am at. Do I really need to go to bed at 8? I mean I normally work nights so what the heck is going on?
Why when one leg is injured do I always pick that leg to land on, over and over again? My ankle is a beautiful color of black, purple, blue, yellow, and a bit of green, not to mention horribly swollen. I have to wear my boots and not my tennis because of pain.
Why does the bunny chew through not once but twice the Ethernet cable? Makes no sense!