NEW YORK, NY – FEBRUARY 02: Celebrity fitness trainer Harley Pasternak (pictured) and stylist to the stars Anita Patrickson help introduce Fitbit Alta, a slim, sleek fitness wristband that can be personalized to fit your style on February 2, 2016 in New York City. Fitbit Alta is designed with a satin finish, stainless steel body and features a line of interchangeable bands in multiple popular colors and premium materials. (Photo by Dave Kotinsky/Getty Images for FitBit)