signs of dehydration

Saturday was the first time I have ever felt the heat was getting to me and I was dehydrated.  I went and did a 9 mile run and after 7 (about 95 degree heat index) I was starting to feel the heat and dehydration.  I could not seem to get enough water, just felt sluggish and light headed.  Ended up walking the last 1/2 mile of the run and by the time I got home, stomach cramps.  Rehydrated and started feeling better after about an hour.

We had our hottest day on record last month, and then the next day, we broke it, so it was a hot couple of weeks. It was hard to workout and not get dehydrated. For me, a symptom is a headache. Sometimes, I get chapped lips too, usually in the winter though.

For me, the signs are a headache and mt fingers, ankles and writs get puffy.  Very attractive

I was running last week when it was 99 with a heat index of 105. I had plan to run 6 miles but after running out less than 2 miles I could tell the heat was going to cause me serious problems. I don't think I had hydrated enough considering the heat and could tell I was not sweating as much as I normally do. After about a mile more both my calves started getting really tight and I had to walk. I tried to resume running but I hadn't taken the time to stretch my calves and I felt a strain in my left calf. No choice but to walk/hobble the last half mile or so.