My 5 year old DD has some habits that drive me to distraction!!! She is constantly jigging about and can't sit still. She is always making irritating noises and won't stop when asked, she's also a really noisy eater, she likes to come and sit next to me jigging about and eating noisilly in my ear.. My 2 DS's don't do this, is it a normal 5 yr old thing?! 