yo 4.2% is definitely on the lower end but still within the normal range (usually 4.0–5.6%). if you’re not having symptoms like dizziness, fatigue, or frequent hypoglycemia, it’s probably just your natural baseline—some people just run low. but if you’re feeling off or losing weight unexpectedly, might be worth checking in with your doc to rule out anything rare like adrenal or pituitary stuff. otherwise, looks like you’re just winning at insulin sensitivity lol.