 The study aimed to assess the feasibility and acceptability of using a Facebook Messenger conversational agent promoting healthy lifestyle behavior changes in the general population in Singapore. The results showed that the delivery of the conversational agent was feasible and acceptable, with high retention and engagement rates. However, recruitment was low, and preliminary efficacy of the intervention did not show definitive improvements in health-related behavior. This article was authored by Dakshina Ardithi Dhinagaran, Thirun Vukharsu Sathish, A.I. Jha Sung, and others.