I noticed the same thing a while ago and it disturbed me.I mentioned it to my father, after some discussion he asked what I meant and we had a look at my mildly twictching feel. He then took his sock off and we both looked on in amazement at *his* twitching feet! Amazing we both though - he'd abviously had it all his life and to no ill effect. The next day around the pool our whole family compared feet - and yes - every one of us - my mum, my bothers and even my wife hat mild twitching on our feet - my mum even had them on her calves quite distinctly...I believe that we must *all* have twitching on our feet to some degree! I mean - my whole FAMILY can't have ALS! 