Participating in Dry January has some obvious health and wellbeing benefits—like better sleep, less brain fog and fewer calories ingested—but it’s kind of a drag, right? Isn’t it all about deprivation?That’s the entrenched opinion, even though 25% of Americans over 21 say they took part in the alcohol-free month last year, per researcher Civic Science.As an antidote to that bad rap, a Brooklyn-based booze-free brand called St. Agrestis has launched a new platform, “The Party is in You,” and a retro-cool 30-second spot called “Happy Hour is a State of…