Shaquille O'Neal is living up to his "Superman" moniker ... just days after the NBA legend had his hip replaced, he's already back in the gym working out!
The Hall of Famer shared video of himself walking into a gym using a crutch on Sunday, before sitting down at a machine and pumping out some arm/chest exercises.
"Bout to get my game back," Shaq wrote in the caption. "All you old dudes that hoop in @24hrfitness @lafitness @lifetimefitness I’m coming for yall."
It's pretty impressive when you realize the 51-year-old just went under the knife a week ago.