A special collaborative project was launched with Social Welfare Department to boost the 3Hs of their rehabilitation service users and their families. Physical activity – namely Zero Time Exercise – was used as a platform to enhance participants’ physical and mental health as well as positive family communication. Trained Social Welfare Department officers delivered a brief and a combined Zero Time Exercise intervention to the participants. They were encouraged to record their exercise goals and practices in a homework booklet to reinforce positive exercise habits.