【延伸阅读朗读版已更新在公众号“可可英语晨读”】免费领取500+期精美双语打印版讲义、加入晨读打卡学习群，微信关注“可可英语晨读”公众号，win the morning，win the day！

Not getting enough sleep? It could be making you more selfish

Sleep is widely recognized as one of life's essential processes, providing powerful benefits in physical health, mental health and even mortality.

But did you know that sleepless nights can also lead to selfish behavior?

Insufficient sleep affects how likely a person is to help someone, according to a new research published in the journal PLOS Biology on Tuesday.

Researchers from the University of California, Berkeley, conducted three studies in the United States looking at this "selfish" effect, analyzing changes in neural activity and behavior benefiting others, and found it was prevalent even after a small loss of sleep.

Research scientist Simon and Matthew Walker told us that this finding was most surprising.

【延伸阅读朗读版已更新在公众号“可可英语晨读”】免费领取500+期精美双语打印版讲义、加入晨读打卡学习群，微信关注“可可英语晨读”公众号，win the morning，win the day！