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.
Despite how crucial it is that people drink enough water, a significant amount of people may be failing to drink recommended levels of fluids each day. The Institute of Medicine recommend that men achieve a daily fluid intake of around 3 liters and that women take in 2.2 liters. Around of 70% of the body is comprised of water, and around of 71% of the planet's surface is covered by water.