Viral Video of Celtics Coach Joe Mazzulla Doing MMA Shows Insane Muscles originally appeared on NESN. Add NESN as a Preferred Source by clicking here.
Joe Mazzulla puts in the work to make the Boston Celtics the best basketball team they possibly can be.
The Celtics head coach also puts in the work away from the court, too.
Specifically, Mazzulla is a committed MMA fighter in his spare time, using his time in the gym to hone an impressive physique.
On Tuesday, this video went viral on X. Mazzulla both explains why he gets after it like this, and he provides a look at the fact that he's in as good of shape as his own players: