The Houston Astros aren't the Cubs, but they have Chicago's post-World Series arrogance down.
No team ever thinks that they'll succumb to the dreaded World Series hangover. They know the risks, they managed the offseason, everything is fine. Hell, the Cubs said they weren't experiencing a World Series hangover while they were in the middle of a World Series hangover. They started 26-27 before hitting the gas and eventually winning the NL Central
You can't quantify a World Series hangover, but the Astros think they'll be just fine. In an interview with The Orlando Sentinel, several Astros players talked about a prospective slow start, and they addressed the possibility. According to pitcher Dallas Keuchel, however, it's a non-issue.