[andness]

Before I started running myself I remember looking at Marathon runners and thinking "Oh they are going so slow, it's just a matter of enduring it". And then I started running myself and realized that the professional Marathon runners are basically running at a pace that feels like sprinting to me.

And that's why I don't try 1500 or 3000m distances. They are just really, really fast and unbelievably painful. A few times a year I might do a 3K as fast as I can, and I dread it. Maintaining a near sprint pace for 10-12 minutes is just crazy hard.

Also, almost every time I get some kind of injury it's because I'm doing a high intensity (fast) run.