sprints

OK, so I thought sprints were going to be hard because I was huffing and puffing and trying to go fast enough. My first time out and already things are not going as planned. I was suppose to run a 6:10 kilometer. I ran too fast but didn't really have a way to gauge it until I was near the end. (actually, I don't exactly how far I ran because I ran to where I thought 0.6 miles ended but I did it in like 5 minutes and so I figured that my calculation was off so I ran another 0.15 mi. to make sure and STILL came in under.
Ugh.
Stats:
Sprints-
1K-5:50
2K-6:00