2012.07.05
For some folks, feeling thirsty is common sign that they're dehydrated. But sometimes the body will also show symptoms to let you know that you need H20. The best way to avoid dehydration is to familiarize yourself with these symptoms so you can fend it off before it starts:
- Dry mouth
- Lowered blood pressure
- Headaches
- Dizziness
- Muscle fatigue
- Dry skin
- Lack of urine
As for staying hydrated all day, the key is to drink water before the thirsty feeling starts. The basic idea here is that you drink water before you know you'll be thirsty. Dr. John Mandrola explains to health blog Greatist:
Not enough summer exercisers start the workout topped off. Before I leave for a bike ride in the summer, I usually chug an entire bottle of water. Again, it's hard to drink that much fluid, but when going out in the heat for a few hours, your body will thank you.
And even if you're not exercising, sipping water on regular intervals is still the best way to stay hydrated and feeling fresh. 
