Energy drinks are a $2.8 billion-a-year business in the United States alone, built on the promise of helping you push past that "2:30 feeling."
원문출처 : http://www.cnn.com/2017/08/23/health/afternoon-slump-brain-reward-study/index.html
원문출처 : http://www.cnn.com/2017/08/23/health/afternoon-slump-brain-reward-study/index.html