The Greatest Consequence of Physical Exercise is Happiness In order to quickly raise your endorphin levels, get involved in sports or even just take a regular walk. Endorphins have been proven to cause a kind of "runners high" — the feeling of euphoria that occurs after a long and intense physical activity. For half an hour of training, the concentration of "happy hormones" in the blood increases by 5-7 times, and it lasts for about 1.5-2 hours. 2.7K views20:50