I exercise nearly everyday as i'm trying to loose and get fit. I try to b friendly with every passerbyer by saying hi or just nice smile makes the track more enjoyable Usually ppl would say hi and yea greet! But there is others who look at u as though u r an idiot or some stupid person and never say anything. Sorry to complain but i just wish ppl b more friendly! Be nice to have more smiles and greetings in this world.