Join i-tri and Athleta for an interactive event, iincluding a book signing and mini workout with “Fit Nation” Author Natalia Petrzela at Athleta in the Bridgehampton Commons on Friday, April 21, from 7 p.m. to 8:30 p.m. The free event will also include a panel discussion with the author and a couple of surprise guests, plus a discounted shopping opportunity onsite. The event is FREE to attend, please RSVP at info@itrigirls.org.