This man's workout nearly killed him -- and it had nothing to do with exercise.

Samuel Kiwasz was at an "Anytime Fitness" gym in Culver City, California on March 29 when an SUV smashed through a window and struck him as he was on a treadmill warming up before a group training class.

"It's a miracle that I'm alive," he told FOX11. "All of a sudden there was this loud crash and the glass came flying and I got hit, and I got shoved back and I went flying and rolled to the side so I wouldn't get crushed."

2 ILLEGAL IMMIGRANTS KILLED IN CRASH IN NEW MEXICO AFTER CHASE INVOLVING BORDER PATROL; 9 APPREHENDED

Security cameras at the gym captured the moment that Kiwasz was on a treadmill at 5:49 a.m., before the Mercedes SUV slammed into the building through a window, ramming the treadmill into a back wall.

"All of a sudden there was this loud crash and the glass came flying and I got hit here by the treadmill," he told FOX11. "And I got shoved back. And I went flying. And I rolled to the side so I wouldn't get crushed."

CALIFORNIA MOTORCYCLE OFFICER INVOLVED IN CRASH DIES

Others in the gym, including trainers, rushed to help get Kiwasz off the floor.

"I ran over here and saw blood coming out of his mouth. And I remember picking him up and sitting him down, wiping the blood off his face," said trainer Cruz Cueva. "And the first thing he told me was 'I'm sorry for ruining everybody's workout.' And I was like 'you don't get to apologize!'"

CLICK HERE FOR THE FOX NEWS APP

The driver, a woman who wasn't wearing shoes, then got out of the SUV before trying to get back in -- but an undercover police officer who happened to be working out stopped her.

Employees told FOX11 the woman, who has yet to be identified, told police her brake pedal didn't work.