Originally Posted by burritos

Meaning if you bike the same exact route for fun vs doing it for to get to work do you get the same health benefit? Does the state of mind, perceived goals, and achievement of goals affect brain hormones/neurotransmitter that might affect physiology differently? Take for an extreme example, does running away from a bear and then sprinting for fun affect you differently? You'll never forget that bear thingy that's for sure.