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.
Most older adults need at least 6 to 8 glasses of water each day to be healthy. Here are some tips to get more fluids in your diet: 1  Drink plenty of fluids throughout the day. 2  Drink more fluids whenever you are vomiting or have diarrhea.