I really need to incorporate push-ups, sit-ups, and burpees or something with my runs. That and intervals. My goal is to get back to 5:00 kilometers (8:00 miles). I've been using Endomondo as my running tracker for the last few years. I think I'm going to pony up and pay for the Endomondo Pro app so I can get the interval work out. Otherwise I'd have to get my wife to pay attention enough to race me every now and then. Very motivational guys.