the male psyche?

There was a 40 minute relay run for the various CCA groups today, and I was one of the runners.. What I really noticed was how 95% of the boys who ran would sprint like mad near the cheering crowds and then slow to a walk in the cordoned off areas.. Tells alot about what makes some guys tick.. O well, at least there were 5% who were consistent.. I wonder if the same numbers work for grown up specimens? hmm...