Why do I startle so hard, and how do I stop hiding it?

You jump. Someone claps, a door shuts, a hand lands on your shoulder, and your whole body reacts before you decide anything. Then comes the second wave — the flush of embarrassment, the small apology, the tiredness of managing this all day, especially with people watching. Understand this first: the jump is the mind's oldest habit, the body guarding itself faster than thought can travel. The witness in you — the part that notices, that could choose calm — arrives a half-second late. That gap is not a flaw in your character. It is simply how a startled mind works, in everyone, exaggerated in you. With a pod or partner, the exhausting part is not the startle. It is doing this alone, explaining it over and over, feeling watched for the next flinch. Practice, here, is shared. The group can learn to move with less surprise. You can learn to recover faster. Both are trainable.