The "8 glasses a day" rule is thought to have originated from a recommendation made by the U.S. Food and Nutrition Board in 1945. The board suggested that adults need about 2.5 liters of water ...

Put down your emotional support Hydro Flask. The widely held belief that humans need to drink eight 8-ounce glasses of water a day — also known as the 8 x 8 rule — is simply not true, a new ...

Eight glasses a day may not actually be based on science. This varies for everyone, and you can get needed fluids from other foods and beverages, too. Share on Pinterest Marc Tran/Stocksy United ...

It’s a good rule of thumb for proper hydration to drink eight 8-ounce glasses of water per day. However, that may not be enough depending on your individual lifestyle, ...

Eight glasses of water per day may be too much, scientists conclude Researchers at the University of Aberdeen estimate humans only really need around 1.5-1.8 litres per day.

Three glasses of this drink a day can prevent dementia — it also fights heart disease and cancer By . Diana Bruk. Published March 12, 2025, 4:50 p.m. ET.