THE BRONX - An indoor rock climbing gym in Brooklyn offers a great workout.
The athletes at Brooklyn Boulders in Gowanus range from pre-K to retirees.
Even experienced climbers can feel the workout burn.
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"Rock climbing is the best workout I've ever gotten," says climber Arielle Hein. "When I'm in good climbing shape, it's the best shape I've ever been in. I feel like it's core, it's like your back, your legs, your arms."