Thanks to Planet Fitness, area teens can stay fit this summer at no charge. Teens ages 14-19 can register today and work out for free through Aug. 31 at 2,900 participating Planet Fitness workout locations, including the gym at 6509 Market Drive, Gloucester, with the return of the organization’s High School Summer Pass program, now in its sixth year. Teens can register at PlanetFitness.com/SummerPass to gain club access. New this year, the High School Summer Pass program is powered by Gymshark, the gymwear brand, and all High School Summer Pass participants will receive an exclusive discount after signing up for the free fitness program, a release stated. Through the program, teen members will have free access to: —Planet Fitness’ complete range of strength equipment, including state-of-the-art plate-loaded machines, cardio equipment, stretching space and more; —Free fitness training from certified fitness trainers, and —The free Planet Fitness App, featuring hundreds of on-demand digi...