Today was one of those days that you don't smile so much running. My reason...it was 100 degrees, literally, and I'm pretty sure the humidity was 100000%, which makes it hard to breathe!
That being said, I ran my first mile in my fastest time I can remember! So once I could breathe again I did smile and I finished outside walking and only started running again once I was on my treadmill with the a/c, ceiling fan, and fan on my machine blowing on me!
So really I felt like I was running like I stole something to start and then there were smiles afterwards! Just know that even those of us who have been running a while struggle in this heat!