My steps never match that of my husband when we take the same walk together. He has a different device and it always records way more steps taken than mine. I had to get up in the middle of the night because of pain and needed a drink of water. I walked around for a short while and on returning to bed glanced at my watch re time which was 3.05 am and then noticed it had recorded 5 steps! This was not accurate. What do I do to correct? Also noticed that it does not record steps on treadmill.