Selena Gomez Boxes for Her First Post-Kidney Transplant Workout: ‘She Killed It’

Selena Gomez is back in fighting shape!
The singer threw more than few punches at Rumble in New York City on Thursday for her first workout after her kidney transplant, and according to trainer Noah D. Neiman, “she killed it.”
“She just came in and went hard. We were all, ‘Okay, that’s what I’m talking about!’ ” Neiman tells PEOPLE of Gomez, who took his colleague Joe Ferraro’s class.
But Gomez, 25, told them that she can go even ha