With $250 and big dreams, Danny Arnold opened a sports training facility in Houston 14 years ago. Now he owns Plex sports training centers in Sugar Land, Katy and Willowbrook that have become the go-to place for an impressive roster of pro sports stars, including Lance Berkman, Julius Peppers, Kevin Kolb and the Lopez siblings, along with everyday Joe's and Jane's seeking a place to get fit.

In the first of the CultureMap series Profiles of Innovation, Arnold tells filmmakers Douglas Newman and John Carrithers about the entrepreneurial spirit that led him to think big and why the exercise business in Houston will grow and prosper.

"I'm leading a charge for an industry that remains untapped," he says.

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