“A lot of people are attracted to or put off from Parkour by what they see on the Internet, and I think the Internet does a bad job of showing what Parkour is,” she says. “It doesn’t show the intermediate steps, the training, the failures it took to get that.”

Henry, a 30-year-old postdoctoral researcher at George Washington University, lives in Northeast D.C. and trains at Primal Fitness in Northwest, the first Parkour gym in America.

She focuses on keeping her body fit and learning new moves, rather than constant motion or making videos.