Drivers who have not had enough water "make as many mistakes on the road as those who are under the influence of alcohol" a study has found.
Scientists from Loughborough Uni tested drivers who had 25ml of water an hour, and found that they made double the number of errors compared to those who were properly hydrated. This was roughly the same number as someone who had consumed the legal limit of alcohol.
The study is published in the journal Physiology and Behaviour.
Guidelines suggest that men should drink two litres a day and women should have 1.6 litres a day.
Keeping a bottle of water on your desk, in your car.....essentially with you all day during hot weather is key to keeping hydrated!