Ollie [ol-lie] as a boys' name (also used less generally as girls' name Ollie) is of Latin origin, and Ollie means olive tree. Ollie is a version of Oliver (Latin). Associated with: tree.
The Takeaway. On average men need 3.7 liters of fluids per day, and women need 2.7 liters. All fluids count, including milk, juice, coffee, tea, and even water-rich foods. Thirst and urine color might be better guidelines for staying hydrated. Weather, activity level, illness, and age can all impact water needs.
Confidence votes 27. you should drink at least 7 to 10 average sized glasses of water each day. One average sized glass is about eight ounces. There are 16 ounces in a pint, 2 pints in a quart, and 4 quarts in a gallon, so, mathematically, there are about 128 ounces in a gallon. If the eight ounces is divided by the 128 ounces, then the average person drinks roughly 0.625 gallons of water per day.