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?

Y: No.

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.

Y: 下次跑步之前先补充carbs，吃块面包。

P: OK， and also, you drank the WRONG liquid, Yang Chen.

Y Why?

P Your body needs to be hydrated H-Y-D-R-A-T-E-D - meaning having enough water

Y: 保持水分。

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。