If you run, you will have probably experienced a “high” at some point — a euphoric feeling that just wants to make you keep on going.
Now, science says it’s not just in the mind: your body may be encouraging you to look for food by making the effort of exercise seem less strenuous.
Scientists at the University of Montréal have found that the runner’s high may be related to levels of the hormone leptin in the blood. Leptin is known as the satiety hormone, telling the body to shut down hunger pangs when there’s enough fuel on board.
The research found that when you’re using energy, leptin levels eventually drop to a point where a signal is sent to the brain to increase stamina and make running seem rewarding, essentially facilitating “the pursuit of food”.