It's difficult to say just how much water you need to drink per day to stay hydrated and functioning properly. Gender, age, activity level and health all factor into the equation. However, in general, adult men should consume about 125 ounces of water per day and women 91 ounces per day. Sounds rather intimidating, but consider this — those recommendations are a combination of plain water, other beverages and the foods you eat. So, if the thought of downing almost a gallon of water each day makes you gag, it's time to eat those fruits and veggies.

Dehydration

Dehydration can occur in anyone but is especially common in children and older adults. It occurs when you use or lose more fluids than you take in on a daily basis. Fluid levels in the body get lower and function can be affected. Lack of fluid intake, illness, and even the weather can affect your hydration levels. Mild dehydration can usually be reversed at home, but be aware that severe dehydration may require a doctor's intervention. Here are some signs to look for.

• Extreme thirst
• Less frequent urination
• Dark colored urine
• Fatigue
• Dizziness
• Confusion