Doing it every day and every night - it's not that she gives me a chance to deny it anyways. She's really a little princess - normally she's a "i do not want to be touched" nobility, and 2-3 times per day she loses control and begs, prods and sometimes bites me to get her belly rubbed for about 15 minutes.(edit: this includes salivating all over me while getting bellyrubbed because its sooooo good) afterwards it's back to "NO TOUCHING" again lol - at least she doesn't announce that change in attitude with her claws but by simply leaving.