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.
The Food and Nutrition Board at the Institute of Medicine offers a ballpark estimation: Women should drink approximately 2.7 liters (about 11 cups) and men approximately 3.7 liters (more than 15 cups) of total water a day. The key word is total. The key word in this sentence is total.