This is really cool !!Planet Fitness wants to encourage teens to exercise this summer, so they are letting high school students workout… for free!! How cool?! It's from May 16 to August 31, as part of their High School Summer Pass, teens ages 14-19 will able to work out free of charge at one of Planet Fitness’ 2,200 locations in the U.S and Canada. Teens can pre-register now at planetfitness.com/summerpass. Teens under 18 have to register with a parent or guardian online or in person at a club. Photo Credit-Getty Images