Several studies show that people who are generous are typically happier and more satisfied with their lives than those who do not give. And other studies show that giving leads to activity in the reward centers of the brain (the areas of the brain that are also stimulated by tasty food and sex).
一些研究表明慷慨的人通常比不奉献的人更快乐、更满意于生活。也有一些研究表明奉献引起大脑回馈中心活动（回馈中心是大脑的区域，也受美食和性行为的刺激）。