A Watervliet man has admitted to stealing vehicles parked at local gyms. Matthew Seeloff, 36, was arrested after police said he stole a 2022 Jeep Grand Cherokee from Planet Fitness in Latham Farms, a 2009 Subaru Outback at Best Fitness on Central Avenue and a 2018 Ford Focus at Vent Fitness on Troy-Schenectady Road.