(Very) unfit??

I decided to test my fitness, following instructions on a website. (1) Exercise and take pulse. Mine was 100. (2) Wait one minute and then take pulse again. Mine was 82. (3) Minus the second figure from the first and divide by 10. So I'm 1.8. Apparently, a figure of <2 is 'poor' and you should aim for something like 4. But my resting pulse is only 72, so even if I'd managed to get down to that in the minute, my figure would've only been 2.8, which isn't much better. Perhaps I should've exercised for longer than the one minute running on the spot and got my pulse rate higher! :)

There are now 80 000 people classifying the galaxies. There are (initially) one million to classify, but they want each to be classified by 20 different users. We're over halfway through that task, it seems - what then?