Gymnasts have strength that is hard for others to understand. Kacy Catanzaro is one of these gymnasts that has unbelievable strength.

If you’ve ever seen “American Ninja Warrior” on NBC, you know just how hard that obstacle course can be. Some of the world’s best and most well-conditioned athletes have failed trying to complete it. It has brought Navy SEALs to their knees.

But not Belleville’s Kacy Catanzaro.

Despite standing just 5-feet tall and weighing in at 100 pounds, the former standout gymnast at Towson University in Maryland, absolutely demolished every obstacle the course had during Tuesday night’s episode. Catanzaro became the first woman to ever advance out of the qualifying stage and into the finals.

These skills shouldn’t come as a shock though. Catanzaro was the NCAA Southeast Regional Gymnast of the Year and the ECAC Gymnast of the Year, while being part of Towson’s 2009 and 2010 ECAC championship teams. During her gymnastics career, she trained out of Rettig’s Gymnastics Club in Cedar Knolls.

With the hashtag “#mightykacy” trending on Twitter, Catanzaro wowed the crowd at the Dallas regional — including former NFL star, Tim Brown — and will now move on to compete on the finals course, “Mt. Midoriyama.”