So let me ask you: How many of you in the last month have eaten more than you think you should? Just kind of general. OK. How many of you in the last month have exercised less than you think you should? OK, and for how many of you has raising your hands twice been the most exercise you got today?

https://www.ted.com/talks/dan_ariely_how_to_change_your_behavior_for_the_better