When I ran sometimes random people would do this to me and it really does make you feel great and motivate you. I still remember this old couple that went on daily walks I would always go past and we'd always wave, and one day he told me how much I'd improved. It doesn't take much to brighten someone's day.
Reminds me of a time my high school English teacher was out jogging and some idiot rolled down his window and yelled "go home, fat b****!"
The next day we all had to write a short essay on not being an a**hole.
The next day we all had to write a short essay on not being an a**hole.