IGO 3.0 Attribution-NonCommercial-NoDerivatives (CC-IGO BY-NC-ND 3.0 IGO) license (http:// creativecommons.org/licenses/by-nc-nd/3.0/igo/legalcode) and may be reproduced with attribution to the IDB and for any non-commercial purpose. No derivative work is allowed.Any dispute related to the use of the works of the IDB that cannot be settled amicably shall be submitted to arbitration pursuant to the UNCITRAL rules. The use of the IDB's name for any purpose other than for attribution, and the use of IDB's logo shall be subject to a separate written license agreement between the IDB and the user and is not authorized as part of this CC-IGO license.Note that link provided above includes additional terms and conditions of the license.The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the Inter-American Development Bank, its Board of Directors, or the countries they represent. Low physical activity is a worldwide problem and, as a region, Latin America and the Caribbean is one of the worst affected. The problem is particularly acute among poor and more unequal countries, and among the poor and less educated populations within countries. Physical activity also suffers from a marked gender gap: women exercise less than men. Inactivity among young and school-aged children is particularly troubling. However, this picture of an increasingly obese, stationary region is incomplete, blurred by a lack of reliable and comparable data.The IDB has been supporting sports-for-development (SFD) initiatives in Latin America and the Caribbean since 2004. Thus far, the 18 IDB-sponsored initiatives benefited more than 89,000 people in 18 countries. These interventions used sports to reach and retain young people in programs with broader objectives including employability, skills for life, education, health and well-being, violence prevention and social and gender inclusion.Given the lack of evidence, the lack of consensus about what works and what doesn't work, and the importance of designing programs right, recommendations begin with increasing data collection, starting small with projects that can be evaluated, and expanding once there is certainty that the projects at least produce no harm. Given the imperative to improve children's motor skills and their knowledge of physical activities, and to enhance exercise levels for children and adults alike, proven behavioral economics interventions, such as "nudging" individuals, offer a valuable tool. Lastly, because investments in other areas could have spillovers on physical activity, it is important to internalize this as we have internalized the role of public policy on the environment and other areas. These lines of action should be the guide for the IDB in the next 10 years.