压力大、高兴不起来？你可以试试观鸟这项与大自然亲密接触的活动。研究发现，观鸟可以帮我们减轻压力，让我们更快乐、更健康。 Photo/Pexels The men

In the past two weeks we have looked at the happiness formula defined by positive psychologist Martin Seligman, where H (happiness) = S (your biological set point for feeling happy) + C (the conditions of your life) + V (the voluntary choic