笑一笑吧！今天是一年中最幸福的一天！

英国的一位心理学家用他发明的公式证明了今天，6月23日星期五，是一年最幸福的一天。

今天（感谢上帝）是星期五（TGIF!），过了今天夏天就来了！

 

A psychologist says he can prove that Friday 23 June, today, will be the happiest day of the year.

Cliff Arnall, a University/> of Cardiff/>/> psychologist specialising in seasonal disorders, has created a formula for finding happiness. The research looks at everything from increased outdoor activity and rising energy levels, to picnics and beach trips with families.

Mr Arnall's equation is broken down into six variables: (O) outdoor activity, (N) nature, (S) social interaction, (Cpm) positive memories of childhood summers, (T) temperature, and (He) holidays and anticipation of time off.

Friday 23 June was pinpointed because it also taps into many people's "thank goodness it's Friday" feeling at the start of a summer weekend.

Mr Arnall said: "Happiness is associated with many things in life and can be triggered by a variety of events. Whether it's a sunny day or a childhood memory - I wanted my formula to prove the key to happiness can be that simple."

The research, sponsored by the ice cream company Wall's, was commissioned to coincide with the launch of a photographic competition asking people to capture moments of happiness associated with the experience of summer in Britain/>/>.

Other recent research also indicates that summertime experiences, such as eating ice cream, increase happiness as they light up the brain's pleasure zones.