This actually almost happened to my sister a while ago. Mom told her until her face was blue that if she didn't stop drinking energy drinks like water, she would start having heart problems before she was 30. Lo and behold, at age 24 she was sent to the ER after complaining of chest pain and they discovered that while she didn't suffer a heart attack, she did indeed have life-threatening heart problems, for which she had to have surgery. Fortunately, that got the point across. She's better now.
