Brains are complex and brilliant things, but amazingly they're 75% water. So, if you want yours to perform at its best, make smart hydration part of your everyday routine with the 100% spring water of drench®

Or you might prefer to stay on top of your game with the fruity hydration of new juicy drench®. It contains 8% fruit juice, in three flavours that are guaranteed to stimulate your pleasure receptors.

The average person has forty litres of water in their body – but we can lose as much as 2.5 litres as we go about our daily lives, through breathing, sweating and other ‘natural functions’. Being 75% water, brains are especially prone to ‘losing it’. Our experts tell us that even mild dehydration can cause all sorts of problems, from light-headedness and irritability to tiredness and even headaches. Ouch.

Luckily there’s an easy way to ensure your mental performance doesn’t become distinctly average. Stay drenched.


It’s been scientifically proven that keeping fluid levels up will help you stay at your most alert and focussed. Just what you need to deal with that mountain of emails – sent by people who seem to survive without brains.


Experts recommend at least eight 250ml servings* of water throughout each day. This is not only important for the body, it’s also crucial to keep concentration levels up. Important, if you don’t want to nod off during a particularly boring meeting (or first date).


They say to err is human but to umm is divine. However, there are certain things you can’t afford to forget. The name of your new boss. Your front door keys. Obscure anniversaries. Luckily, if you can just remember to keep your hydration levels up, other things will be less likely to slip your mind.

*This figure is based on a 65kg/10 stone adult. You may need more fluids if you’re a little heavier than that. Smaller people and children require proportionately less.

When you start to feel hungry, grab a bottle of water before you reach for food. It’s easy to mistake thirst for hunger pangs.


If you’re suffering from the sniffles, a cough, or a full-blown cold, you’re probably dehydrated too. We prescribe a bottle of water to sip on during the day.


Stay drenched. By the time you feel thirsty, you’ve probably already lost around 500ml of water from your body – which can seriously affect your mental performance.


Have a bottle with you on your commute, on your desk or, if you’re lucky enough, on the beach. That way, it will be easy to sip throughout the day.


Sip slowly. Hydrating gradually will give your body the best possible chance to absorb it. Drink too quickly and it will pass straight out of your system.


Our bodies lose water while we sleep (bed-wetting is a separate matter). So, drink water before going to bed and again when you wake up.


Even during a moderate workout, you could lose between 500ml and 1.5litres of water per hour. So sip water regularly during your workout, and drink at least 600ml of water when you’ve finished exercising.


Don’t forget that your body loses more fluids in hot weather – so make sure you drink additional water to make up for the loss.





A team of scientists uncovered some worrying trends and attitudes to hydration:

• Two thirds of us are not properly hydrating each day. Not smart.
• A third claim they ‘don’t think about hydration’. That’s mental.
• 32% said they only drink ‘when they are very thirsty’. As any scientist will tell you, that’s a sure sign your body is already in need of hydration.
• 15% of us claim we ‘don’t have enough time’ to keep our hydration levels topped up.
• Over a third of adults travel without taking a drink (I hope they’re not at the wheel).
• 40% of adults admitted to going without a drink when thirsty at work, with 10% blaming lack of breaks for their hydration levels. Slackers.
• 5% even suggested hydration was ‘boring’. Don’t they realise it helps keep you on top of your game?

Source of all figures: Expert Group on Hydration ‘Fluid Thinking’, 02/06/05