Mar 17, 2021 The next time you have a headache, you might not need Advil. Or, go ahead and take it . . . but chase it with a FULL glass of water. A new poll looked at what we normally do to deal with symptoms that might just be signs you're dehydrated. Here are six of them, and what we normally do . . . 1. Headaches. 43% said they usually just take a painkiller. Only 1 in 6 drink water. 2. Feeling dizzy. 45% lie down . . . 20% close their eyes . . . and water is third at 18%. 3. Constantly feeling tired. Lying down and napping are the most common ways we deal with it. Only 15% hydrate.