The broader your grin and the deeper the creases¹ around your eyes when you smile, the longer you are likely to live。

你在微笑的时候嘴咧的越大，眼周围的皱纹越深，你可能活的越久。

Broader grins and wrinkles around the eyes reflect an underlying² positive outlook on life that translates into better long-term health, the researchers believe。

大大的笑容和眼周深深的皱纹反应了你对生活潜在的态度，这种态度让你过一个长久健康的生活。

Experts studied 230 pictures of major league baseball players printed in the 1952 Baseball Register。

专家们从1952年的一些主要的棒球联盟中研究了230名注册棒球队员的照片。

The researchers ranked each player according to whether they had no smile at all, a partial smile, where only the muscles around the mouth were involved, or a full-blown smile that featured a toothy grin, raised cheeks and creases around the eyes. The researchers then compared the photos with the life span of each player。

专家们按队员们的笑容进行等级分类，分别是“一点都不笑”，“笑了一点儿”，“微笑时嘴部肌肉有抽动”或是“笑的合不拢嘴”，以及“扬起脸，眼睛都笑出了皱纹”等这几个分类。然后他们把这些照片与队员们的寿命进行了比较。

The results revealed that of the 184 players that had since died, those in the 'no smile' category had lived an average of 72.9 years。

结果显示，在184名现已去世的队员中，那些属于在照片中“从不微笑”的人，他们的平均寿命是72.9岁。

The findings support another study which showed that being happy can reduce the risk of heart disease这些证据同时也支撑了另一项研究，那就是保持快乐的心态会降低得心脏病的风险。