People with Aspergers are more likely to be emotionally weak than physically weak. Anybody can be physically weak, it depends on how much you do to build your muscles, it's got nothing to do with neurology, unless you have things like Cerebral Palsy or other conditions like that, but those are more physical conditions, where as Aspergers is more of a mental condition and only affects physical things like sensory issues (mostly with ears), or bad posture, but that is caused by how the brain works, but how you're naturally built. So, yeah, I think it's a stupid myth.
Because I walk fast, I feel my muscles in my back legs (below my knees) are quite broad, which is good because at least then I can run faster. But the muscles in my arms are very small, but I never thought that was anything to do with Aspergers. I thought it was because I didn't like sports at school, and found it hard to swim, and so didn't really give myself much chance to build my muscles in my arms. Also I know other people (especially women) who are weak in the arms anyway.
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Female