I got on the bike yesterday with the intention of logging some miles towards my 50 mile goal for the week. It was windy. I called it quits after 4 miles. Actually, I called it quits after 2 miles and had to ride home.
Lets just say that my average heart rate was 140 instead of 115 or so and my cadence was around 85rpm but my average speed was only a few tenths faster than the 10mph wind.