Your body makes its own cannabis-like chemicals as you run, and neuroscience research finds they keep rising all the way to the marathon finish line, a possible clue to the runner's high

Your body makes its own cannabis-like chemicals as you run, and neuroscience research finds they keep rising all the way to the marathon finish line, a possible clue to the runner's high

Most research on the runner’s high has looked at workouts under an hour. New research on marathoners and ultramarathoners found the body’s cannabis-like chemicals remain active through hours of running.