Pioneering social scientist and social health expert Kasley Killam argues that this definition of wellbeing is missing a major component: social connection. Data and headlines alike reveal that our society is suffering from an epidemic of loneliness. Killam rethinks our definition of “health” to include this missing link, opening our eyes to how social health is a vital dimension of wellbeing that derives from our connections and sense of community. True wellness is a trinity—physical, mental, and social health. But just like an exercise routine or mental health care, we need practices to nurture our social health. Killam provides research-backed tools, habits, and practical solutions that can be put into action, from calling friends on your commute to larger calls to action for walkable urban spaces and best practices for the workplace. The future of health is social.