Jonathan Stoklosa may have a gentle smile, but he’s as tough as they come — in the gym, at least.

The 31-year-old with Down syndrome lives in Newark, Delaware. He works as a bag boy at a local grocery store. But in his spare time, he trains as an elite powerlifter. In August, CBS News profiled the Special Olympian who has also found success at regular powerlifting matches. Remarkably, Stoklosa can bench-press more than 400 pounds.

“You walk away going, ‘Wow,’ or ‘Did I really just see what I just saw?'” his trainer, Brandon McGovern, told the station.

via Jonathan Stoklosa, Delaware Man With Down Syndrome, Is A Powerlifting Champ VIDEO.