Boy, this sounds like low potassium to me! I get all twitchy when I'm low. It's just started to be warm enough that I'm drinking way more water and K+ is easily washed out. I use a sprinkle of lite salt on everything as a way of keeping the level up, and take a few of the supplement pills when I'm really working up a sweat. (Right now, in April, I don't feel the sweat because the humidity is low but I'm still losing potassium.)