True.  I sprained my ankles in a remote  wooded park on two different occasions (once I slipped on the ice and sprained one ankle, another time I tripped and sprained both of them, yes I am clumsy ).  This was in ancient times before cellphones were invented.  I had no choice but to get up and limp the 1.5 miles out, best to get moving  before the swelling sets in.    Plus, I figured even if someone found me, what could they do for me to help anyway,  carry me?