We all know crunch is "bad," but if asked for specifics - how much is too much, what are the actual metrics-based effects on the mind and body, is it better to do one week of horrendous crunch or several weeks of mild, backed up by actual peer-reviewed published research - most of us would have a hard time pointing to any sources of data. In this eye-opening talk, Ian Schreiber walks through a literature review of the science behind long work hours (and the sleep deprivation that can often come along for the ride) to show a clear picture of exactly what happens. Spoiler alert: it's probably more than you think!