Planet Fitness offering free gym to teens during summer

If your Planet Fitness gym seems a little more crowded this summer, this might be why.

The fitness chain announced that it is offering teens ages 15-18 free access to its clubs during the summer.

The Teen Summer Challenge kicks off May 15 and goes until Sept. 1. During that time teens can use the gym, including fitness classes, at the facility they sign up at for free.

Teens under 18 will need to get their parent or guardian to sign them up. And all teens who sign up are also entered into a sweepstakes with cash prizes.

There are 1,700 clubs around the country, including 19 in Western Pa.