Seven in ten van drivers say that work pressures severely impact their ability to keep hydrated and have a healthy diet – with 27 percent adding that they rely solely on sugary drinks or caffeine to get them through long days.

That’s according to Business Barometer research from Mercedes-Benz Vans UK. The research found that one in five of the UK’s van drivers are avoiding drinking water, suggesting they might be keen to avoid having toilet breaks that can impact targets for delivery companies. One in ten said they “wee” on the move to avoid having to stop and potentially miss challenging targets, with 31 percent saying that asking to use a customer’s facility would be too awkward.

“Being dehydrated impacts cognition and therefore driver ability – and so it is of vital importance that van drivers take more care of their health and diet during the heatwave,” said Steve Bridge, Managing Director, Mercedes-Benz Vans UK. “Our research also highlights an interesting debate regarding the use of customer toilets; it is perhaps unlikely that we would say no to a plumber or electrician asking to use our facilities – so why would a delivery driver be any different?

“In this hot weather, we are asking the great British public to consider the health and wellbeing of delivery drivers, and to open their minds, and toilets, to these hard-working men and women to ensure they can stay well hydrated and keep Britain moving.”

More than 2,000 van drivers and owners were asked to give their feedback on hydration and health. Nearly two-thirds (63 percent) said that their health has been impacted by a poor diet at work, with one in ten now suffering a serious health condition as a result of working patterns.

“Van drivers have a busy job and need to maintain high levels of concentration all day,” said Johanna Hignett, member of the British Dietetic Association and spokesperson for the National Hydration Council. “Being well hydrated is really important, not only for our physical health, but also for mental performance. If we don’t consume enough water, we can experience fatigue, or become less alert, so it is really important that van drivers are taking on fluid throughout the day.”

The European Food Safety Authority recommended fluid intake per day for is 2.5 litres for men and 2 litres for women, around three quarters of which should be coming from drinks.