A lot of people believe that they should drink 8 glasses or 2 litres of water a day.A new report thinks d_____.The repor

A lot of people believe that they should drink 8 glasses or 2 litres of water a day.A new report thinks d_____.The report suggests that people drink water when they feel thirsty.
The report gives a guide for water amount.For example,men should get about 3.7 litres daily while w_____ should get about 2.3 litres daily.But it's hard to know how many glasses of water are enough,because the food we eat every day a_____ contains a lot of water we need.
Some expert think that the misunderstanding may be traced to an American health report in 1945.It said a good amount of water for most adults was 2.5 litres daily,because an adult needs one milliliter of water for each calorie of f____ that he eats.But that was only part of the report.It also s_____ the most of the water we need is contained in the food we eat.
Many experts believe that water amount d_____ on many factors ,such as food in-take,personal health,weather,the environment,and even how often you exercise.Too much or too little water is h_____ to your health.