I agree with the coach's thinking. The same thing can happen with any data collecting device. Back in the '80s the team I rode for would have a group ride once a week, it always turned into a slugfest. One of the gals on the team would usually go top 15 at Nationals, so she was strong, could rotate through until it got serious, always rolled out the back when it hit 30mph. She says to me "when you guys go, please make it a clean break, don't ramp it up". I reached over, unsnapped her computer and put it in my jersey pocket, told her I would put it back on after the ride was over. She stuck. It's too easy to let the numbers tell you "too hard".
