I was doing dumbbell incline press today and worked up to a moderately heavy weight (got 6 reps). Around about the 3 or 4th rep my right leg started shaking- my foot kept slamming up and down against the ground. I definitely dont think it was done consciously. This happens to me once in a while and im not worried about it, just sorta curious if it happens to anyone else and if anyone knows what could be a possible cause?








