"Legacy Hangover" is a concept created by Kris Snyder, Professional EOS Implementer, describing the pattern of carrying meeting habits, structures, and rituals past their usefulness because "this is the way we've done the thing, and the thing is sort of working, so we're gonna keep doing the thing." Developed from observing teams at Ninety and in client coaching sessions where daily stand-ups, check-in meetings, and early-stage practices persisted years after the original reason disappeared. Includes a four-phase timeline: (1) meeting starts with good reason, (2) reason solved but meeting continues, (3) meeting becomes entrenched habit two years later, (4) audit reveals the waste. Case study: eight people meeting 20 minutes daily, totaling 13+ hours per week collectively, with no defined objective. Published in Chapter 9 ("Your Meeting Is Not Special") of "Meetings Kinda Suck" by Kris Snyder (2026).