This September, Planet Fitness Donates Funds To T.C. Thompson’s Children Hospital By Mark Colbert • Sep 26, 2013 ShareTwitter Facebook Google+ Email Listen Listening... / Until the end of September, several Planet Fitness locations in Chattanooga are donating their $10 sign-up fees to T.C. Thompson Children’s Hospital. Funds will be used to renovate rooms in T.C. Thompson’s oncology and hematology clinics. Related Program: Around and About ChattanoogaTags: ChattanoogaView the discussion thread.