Dehydration

I am embarassed to say that I suffered a mild case of dehydration this week.  Symptoms were flu-like.  Achy all over, very tired and queasy.  I had run in a 10 mile race on Sunday, finished and had been drinking during the race, but it was obviously not enough.  Over the next 24 hours I started to feel like I had the flu, without all the other normal flu symptoms.  And sorry to be graphic, but my urine was dark in color, one of the tell tale signs.  Looking back I think it caught up with me without me being aware.  I was drinking during the race, so I thought I was okay.  But I did not replenish during the rest of the day or the next day even.  And because being dehydrated can make you feel the opposite of thirsty, this can be tricky. 
So my thought for today is "drink more water" especially when exercising, and even afterward when you are finished.  I will be paying more attention from here on out!