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.
Water is the best fluid to drink because it contains no calories. 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.