Were obviously big fans of exercise in general, but making time for a regular fitness session does more than just sculpt a strong physique. While getting your sweat on may not cause happiness, it can certainly contribute to it. Physical activity helps our bodies produce diseasefighting proteins called antibodies and our brains release endorphins. While antibodies boost happiness by keeping illness at bay, endorphins are feelgood chemicals that improve your mood while promoting feelings of euphoria. To top it all off, research suggests that regular activity may lead to lasting happiness . So its safe to say your pricey gym membership pays off physically and mentally in the long run.