Originally Posted By: Pete

Some indicators of dehydration risk:

1. Your urine is turning strongly yellow or brown
2. When you hold the back of your hand close to your mouth,
your breath feels dry and hot.
3. You pause to remember the last time you took a drink of
water - and realize it was several hours ago.

Pete

There's one that my bosses keep stressing at work, that I always forget:

lack of armpit sweat.

Gross, but think about it. It's almost always moist.