A rather handsome gentleman walks up to an out of shape, overweight woman. He says something along the lines of, "Excuse me, but I'm really hungry and am going to have to steal a bit of your energy. You seem to have a lot." She is suddenly unconscious. She awakens feeling very tired and drained to find a note on your chest. It tells her not to worry, that she should be recovered and back to normal within a couple weeks. Surprisingly, she is recovered within an hour, but is shocked to discover that she is now as beautiful as a model. She makes use of her new appearance primarily for the purposes of sex (this is Literotica). She even has some fun with coworkers or whatever, who don't recognize her. A couple weeks later, she wakes up and discovers that the gentleman's promise that she would be back to normal was true, and her beauty and health were gone. She sighs to herself and says something along the lines of, "Oh well. I figure a couple years at a gym and I'll be back to normal."