You make me want to try out my odd trial-and-error medicine from various ailments I've had. Is the foot like a cramp thing? I had that, and someone told me to eat bananas. Potassium deficiency can do things like that. Generally when my hand is shaking it's from overuse in writing/typing or bloodsugar issues. Chest pain is worrisome. I'm sorry your body acts in strange ways without your permission. :(