They say 'like father like son', but Jackie Chan would tell you otherwise. The action movie star, who has been exercising since his youth for his martial arts training, said he enjoyed exercise and it was a key to his life. But his son - singer Jaycee Fong Cho-ming - is no fan of gyms and fitness. 'He doesn't like this sort of thing,' Chan told CitySeen. 'All he does during his free time is play on his computer and surf the internet.' Chan announced yesterday that he and fitness chain California Fitness would co-operate to launch his first gym. The gym, which will open in Tsim Sha Tsui in June, will use the action star as its theme - the first-ever themed fitness centre in Asia. Chan said gym members would get to learn the type of training that turned him into an action film icon. He also revealed he has provided recipes for the gym's juice bar. Could fruit juice be the secret that has kept Chan hopping and jumping on the silver screen for more than 30 years?