三年后，最健康的群体是那种只吃一杯食物的每一天。

After three years, the healthiest group is the one that is only eating one cup of food each day.

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乐观者是那些在任何群体和圈子中最开心、最健康、最成功、最有影响力的人。

Optimists are usually the happiest, healthiest, most successful, and most influential people in every group and society.

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