Leg shaking like it’s a full-time job? That’s called psychomotor agitation, a common response to anxiety. When your brain perceives stress, it activates the sympathetic nervous system, releasing stress hormones like adrenaline and cortisol. This triggers the fight-or-flight response, increasing your heart rate, muscle tension, and energy levels. Your body is primed for action — even if there’s no real danger. Leg shaking or fidgeting is your body’s way of burning off that excess energy. It’s als