False

By the time you're thirsty, you may already be dehydrated. So even though you may not be thirsty, you may be dehydrated.

The colour and quantity of your urine are better indicators of whether you're well hydrated or not. Dark, scant urine is a sign of dehydration. Light coloured urine and going to the washroom frequently are both good signs you're getting enough fluids. If you take vitamin supplements your urine may be dark, so in this case volume is a better indicator than colour.

To remain well hydrated, drink at least 6-8 cups (1 1/2-2 litres) of non-alcoholic, non-caffeinated beverages such as juices and soups each day. If you're active you may even need more fluid than this. For a change, try juice spritzers by mixing orange or cranberry juice with soda water. Remember that coffee, tea and alcoholic beverages do not hydrate you well.