title: The runners high and the opioid and endocannabinoid systems.
mesh_terms: D000818:Animals; D008297:Male; D010805:Physical Conditioning, Animal; D043884:Receptor, Cannabinoid, CB1 / Q000502:physiology*; D043885:Receptor, Cannabinoid, CB2 / Q000502:physiology*; D012420:Running
chemical_list: D043884:Receptor, Cannabinoid, CB1; D043885:Receptor, Cannabinoid, CB2