I&#x27;m barely a noob (did run&#x2F;jog 15 miles once), but I love running and when I reach groove, it&#x27;s a bit more than groove. I feel a strong uplift. Not a high, but suddenly pain and even effort just vanish from my mind and I just &#x27;fly&#x27; contemplating the world. It&#x27;s a very happy sensation. Unfortunately it&#x27;s also a zen exercise because it&#x27;s usually when you become aware that you&#x27;re &#x27;flying&#x27; that you start to drift away from it. Maybe a relation between not running for the sake of it, but running while thinking of something else.