Thanks for the info Annie! That makes too much sense! It completely explains why, when my hands are cold, which they often are due to Raynauds, they are also incredibly weak. Walking in the cold, with gloves, to my car in the winter will leave me baerly able to grip my keyfob when I get there. If walking in snow, even in thick wook socks and heavy winter boots, my Raynauds kicks in and then I guess MG takes over and my toes become impossible to move, even my ankles won't bend, then the knees try to stop working. Very interesting.