A while ago this was posted: http://www.kk.org/quantifiedself/2009/10/the-false-god-of-coffee.php http://www.kk.org/quantifiedself/2009/10/the-false-god-of-co..

A while ago this was posted: http://www.kk.org/quantifiedself/2009/10/the-false-god-of-coffee.php http://www.kk.org/quantifiedself/2009/10/the-false-god-of-co... I found it interesting, if not very rigorous. It shows that one man's productivity did not suffer after quitting coffee.