Food coma is real: the effect of digestive fatigue on adolescents' cognitive performance / Justine Hervé (Stevens Institute of Technology), Subha Mani (Fordham University, University of Pennsylvania, IZA and GLO), Jere Behrman (University of Pennsylvania), Ramanan Laxminarayan (One Health Trust and Princeton University), Arindam Nandi (The Population Council) ; IZA Institute of Labor Economics