by The B2B Growth Newsletter My aunt is a beast. She wakes up at 4:30, downs ~6 shots of espresso, and hits a gym class called “F45.” She’s 100% in on this F45. She goes every day. She has all their gear. She posts about them on social media and won’t stop talking about them. She eats, sleeps, and breathes F45. The interesting part? Last year, she was 0% into F45 and 100% into Orange Theory. The year before, she was 100% into some boxing class. At some point, she was 100% into Beach Body. She is either 100% into something,…