Everyone knows a “tired girl”: those tired old ladies who inhabit a younger body that just want to do nothing but sleep. My girlfriend is one of these “tired girls” and, if you let her, she would sleep for 15 hours straight with no problems. She's more than happy to go to bed at 9 pm on a Friday night and her ideal Saturday evening is curling up on the couch with a bowl of popcorn before hitting the hay at the startling hour of 10 pm. As with anything, there will be someone out there in the wor…