Does having positive emotions benefit the body in any way?

Yes. Researchers have identified links between positive emotions and overall health and well-being. "People who experience warmer, more upbeat emotions live longer and healthier lives" (Kok et al., 2013, p. 1123). "Moreover, it appears that positive affect may influence health not only by buffering the effects of stress, but also by inducing positive biological function and marshaling additional healthy beneficial psychosocial resources" (DeSteno et al., 2013, p. 477).