New York Jets center Nick Mangold is known as one of the NFL’s top offensive lineman, and a physical focal point of the Jets’ running game. But he may not be the strongest Mangold in his family.

His sister Holley is an Olympic weight lifter, but she’s not limited to the gym. NFL players are rushing to take part in the box jump craze, in which they show off their vertical capabilities by leaping straight up onto boxes of varying heights. Check out the ups on Holley Mangold though.

Alright, so maybe she bit off a little more than she can chew. Don’t say it to her face though. Because she can probably pick you up and slam you.

For those wondering what those serious box jumpers are getting into—have a look.