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.
Detox gurus, personal trainers and diet authors usually suggest we should be drinking at least two litres of water a day â sometimes as much as four litres â but according to current NHS advice, most adult women need only around 1.6 litres of fluids in general (rather than water, specifically) a day, and men around two litres, to keep the body ...