Originally Posted by Trenditional
I believe I read somewhere that its the 40 min mark, where fat burning begins. You might want to look into this. I'd lean towards longer runs, but I guess you need to define what you consider short and long.
As an athlete in college I was under the impression of two things. 1) You don't run to actually burn fat during the process. I was always thought that the reason I was running was to burn off some...