Was it celebrity allure that led me to F45 Training, the Australian fitness chain for which the famously ripped Mark Wahlberg serves as chief brand officer? Wahlberg’s enviable six-pack abs ...

The first thing you notice is the DJ. That’s because you’re not in a club or partying at your nephew’s bar mitzvah; you’re at the gym. And it’s 9 a.m. on a Saturday. Big-box gyms and their lobby DJs ...

With humble beginnings as a group training gym in Australia, F45 has taken over the UK, with more than 50 studios — 41 in London alone — open across the nation. The F in F45 stands for functional, ...