This neurobiological reward ( runners high ) is often reported by runners .
This neurobiological reward ( runners high ) is often is thought to result in habitual running -- addictive behaviour , in an effort to get the next fix ( Raichlen et al. , 2012 ) .
This neurobiological reward ( runners high ) is often reported by runners and is thought to result in habitual running -- addictive behaviour , in an effort to get the next fix ( Raichlen et al. , 2012 ) .