Running produces boosts in dopamine, noradrenaline and serotonin in the first instance, with the more hard-earned “runner's high” of endorphins and – some researchers think – an endocannabinoid called anandamide coming later.

Is running an addiction?

A running addiction can occur when a person develops an almost compulsive obsession with the sport. Running can be particularly addictive because of what is known as “runner's high,” the elated feeling that results from hormones in the body getting released from physical activity and endorphins.

Is exercise like a drug?

These are so powerful that we would like to propose that exercise may be considered as a psychoactive drug. In moderate doses, it causes very pronounced relaxing effects on the majority of the population, but some persons may even become addicted to exercise.