There’s a peculiar industry growing inside Brooklyn nightclubs, and it involves acrobatics, bows, arrows — and feet. Contortion foot archery is exactly what it sounds like: People distort their bodies all while shooting a bow and arrow with their toes. Aryn Shelander of Crown Heights, 29, enjoys taking it up a notch, combining foot archery and contortion with partner acrobatics. Photo by Renee Choi She routinely performs handstands midair while using her partner, Jeff Stilt, 33, as support. But it’s a different feat that really elicits gasps from the crowd. “People generally freak out when I pull my ankles under my chin,” she said. The entire act requires …