Y: Patrick, I can't run anymore.
P: Yang, Chen, we've only run a half mile. We have four and a half miles to go before we finish!
Y: What? 还有4个半英里?
P: I wonder why are you so tired. What did you do last night. Shopping again?
Y: Yeh, Macy's had a great sale.又大降价。
P: But that still doesn't explain your terrible performance today, Yang Chen. Llet me ask you some questions. Did you stretch before the race?
P: Did you have a meal with plenty of carbohydrates?
Y: 我不但没有吃碳水化合物，I didn't eat anything。
P: I can't believe this. OK, so, did you have any water or sports drinks before the race?
Y: Yeh, coffee.
P: You did everything wrong. Everything. First of all, your body needs carbohydrates (carbs) for the energy that you will use to run.
P: OK， and also, you drank the WRONG liquid, Yang Chen.
P Your body needs to be hydrated H-Y-D-R-A-T-E-D - meaning having enough water
P： Coffee is a diuretic D-I-U-R-E-T-I-C, so it actually makes you Dehydrated, which means you don't have enough water in your body.
Y: Patrick, I'm not going to quit today, 前进!
P: Let's stop today.You are totally dehydrated! And how many cups of coffee did you have?
Y: I had five!
P: I think it is time to go to hospital, Yang Chen, 救护车。