Everyone always thinks I'm a spaz because I'm always raving about running intervals instead of just jogging. Well I just read an article from Shape Magazine about the The Best Workouts You Aren't Doing. And what do you think #6 is people? Yes, INTERVALS!
Now if I could just take my own advice and start doing these on a regular basis.
Oh, and I totally know what you are thinking. The girl in the photo does look just like me!