Gyms: There are two main gyms and many hotels have their own areas to keep in shape. Try Paradise Palms in Pearl Beach or the Plaza at VJs for a good areas to lift some weights and get back in shape. Your fitness is up to you!
Another idea is just to head out running or walking along the beach, go kayaking or stay away from too much beer 
Originally from Canada and now over four years in Thailand, he is still discovering Koh Chang and Thailand. Most likely a process that will never stop! He is the main contributor and editor for The Koh Chang Sun and is involved with various other projects on the island and back in Canada. His goal is to try to make Koh Chang a better place to live, to visit and improve the community here for all. Thailand and Koh Chang never cease to amaze him... Follow @kohchangsun
© 2012 The Koh Chang Sun