Mark Wahlberg isn’t the only one up before sunrise for a sweat sesh—J.Lo, The Rock, and even Kim Kardashian are all about those wild early morning workouts. Wahlberg’s 4AM club is legendary (he’s up at 2:30?!), J.Lo’s breaking a sweat before most of us hit snooze, and The Rock’s already on his second gym session by breakfast. Honestly, I’d pay to see a pull-up contest between Mark and The Rock. Who else is joining this extreme early bird crew? #Fitness #4AMClub #CelebrityFitness