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.
Under normal circumstances, around 1.5 litres of fluid a day (about eight glasses of liquid) should be enough to keep your liquid levels healthy. If itâs very hot, youâve been very active and sweaty, or youâve had diarrhoea and/or vomiting, youâll need to drink more to keep your stocks from running low.