I had the Vo2 Max test this morning and it was certainly challenging to say the least! I am VERY glad that I went the spinning bike route rather than the treadmill. It wasn't until about 6 minutes into the test that I actually started feeling anything, but things certain changed! My "score" was 34.7, the high end of "excellent" for my age group. Very interesting, and I found that I cross the anaerobic threashold earlier than I thought.