The general Holistic rule is 1/2 of body weight in ounces per day, has no bearing on gender. So if you weigh 120, it would be 60 ounces per day to stay hydrated. The more active you are, the more you sweat say, the more you would need.
The symptoms of hydration vary person to person, among them are dizziness, dry mouth, and fatigue,especially the muscles as they are composed of water. Hope this answers your question.