Driving my Uber I picked up this 27 year old man who gave me a great conversation. I found out he was a bones dr he said if you dont use 17 minutes a day to walk your bones will get weaker. I looked at him like he was crazy and told him so. He said when he was in surgery the patient bones were soft he could put his finger through it. Me again looked at him saying get out of town , slap my face naww! He laughed at me but I was serious about that looking at him until the red light turned green.