I just want to draw your attention to what is quite simply the best article I've ever read on Low Muscle Tone in Aspergers Children; It's called; Low Muscle Tone and Motor Clumsiness in Aspergers Children http://www.myaspergerschild.com/2010/11/low-muscle-tone-and-motor-clumsiness-in.html The article covers detection of low muscle tone (or hypotonia to give its "proper" name), how it presents, exercises that you can do with babies and age-specific exercises you can do with older children. It covers a wide range of topics from motor clumsiness to handwriting, grasp and balance problems. It even looks at the social implications. It's well worth a read.