This evening Emily fell out of bed. This is not news. She went whollop and landed on the floor, let out a cry and stayed asleep.
It did get me to thinking though, why I don't fall out of bed. When do we reach that age where we naturally guard ourselves from doing faceplants on the floor, even when we're unconscious?
I can picture myself in our bed, tossing and turning and having a horrific sleep, yet I stay off the floor. It astounds me that we as a species seem to have developed this trait to stay in bed.
Chalk another one up to evolution!