Best of Philly

2014 Underground Fitness Class

November Project

Head to the Art Museum at 6:25 on Wednesday mornings or Franklin Field at the same time on Fridays, and you’ll see a fitness flash mob: more than 100 (crazy?) people doing burpees and squats in unison. It’s all part of the Facebook-and-Twitter-fueled fitness movement, now in 17 cities, that came to Philly earlier this year. The 40-minute boot-camp-style workouts are open to all and totally free.