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 amount of water that adults need varies, but in general, men should drink at least 13 cups (3 liters) of fluids per day. Women should drink at least nine cups (2.2 liters) of fluids per day. A good rule of thumb is to drink between .5â1 ounce of water for each pound you weigh.