2+ mile speed training at home.

Really good fast run this morning and I have no idea why... I've been NOT looking at my pace but trying to listen to my body instead... does that have anything to do with it? Is it the short length of the run? I'm so confused... Activity Route: 2 mile around school Elev. Avg: 1274 ft Location: AZ Elev. Gain: +0 ft Date: 04/15/10 Up/Downhill: [+13/-13] Time: 07:00 AM Difficulty: 1.7 / 5.0 Weather: Partly Cloudy 54 F temp; 46% humidity 54 F heat index; winds Calm Performance Distance: 2.34 miles Time: 0:23:08 Speed: 6.1 mph Pace: 9' 53 /mi Heart Rate: 163 bpm (Avg) Calories: 260 151 bpm (Peak) Notes WOW!!! Decent heart rate adn excellent time. I've never run under 10 minutes for more than fartleks before. Why so good? How come my heart rate didn't freak out? What's the deal? I'm so confused.... Elevation (ft)

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