 This study examined the immediate impacts of Covid-19 restrictions on movement and play behaviours in Canadian children and youth. The results showed that only 4.8% of children and 0.6% of youth were meeting combined movement behaviour guidelines during the outbreak. Children and youth had lower physical activity levels, less outside time, higher sedentary behaviours, including leisure screen time, and more sleep. Parental encouragement and support, parental engagement in physical activity, and family dog ownership were positively associated with healthy movement behaviours. The study provides evidence of immediate collateral consequences of the Covid-19 outbreak on child health and can guide efforts to preserve and promote child health during the crisis recovery period and inform strategies to mitigate potential harm during future pandemics. This article was authored by Sarah Amore, Guy Faulkner, Ryan E. Rhodes, and others. We are article.tv, links in the description below.