Exercise activates the endocannabinoid system Sparling, P. B.; Giuffrida, A.; Piomelli, D.; More Sparling, P. B.; Giuffrida, A.; Piomelli, D.; Rosskopf, L.; Dietrich, A. Less NeuroReport. 14(17):2209-2211, December 2, 2003. Abstract Abstract Favorite PDF Permissions Buy