Our body weight is 70% water, we need to drink eight glasses (1.5 litres) of water a day, to keep hydrated. Increase your intake of water when exercising and when the weather is hot.Dehydration can cause headaches and other health problems.
Avoid caffeine, sugary, alcoholic drinks as they rob the body of minerals and may use up more nutrients than they provide.
A drink of water can reduce the desire to snack between meals.