Scotland's Olympic gold medallists Chris Hoy and Shirley Robertson have backed a campaign urging the public to drink more water.
Shirley Robertson said drinking water was great for energy
The Scottish Water-sponsored On Tap health drive advises adults to drink two litres every day.
It also states that four to six-year-olds should drink five glasses of water on a daily basis.
Hoy said he has realised water's importance in helping to create "a healthy body and a healthy mind".
Scottish Water's campaign details five main health benefits which comprise:
- Tap water helps create healthy skin
- Concentration and memory are boosted by drinking water throughout the day
- Tap water does not contain sugar so it does not damage teeth and keeps bones, hair and nails healthy
- Drinking tap water before, during and after physical activity helps people stay alert
- Drinking tap water helps boost energy levels.
The Olympians travelled to Davidson Mains Primary School in Edinburgh to help promote the health benefits of drinking plenty of water.
Hoy clinched gold in Athens in the men's 1km cycling time trial while Robertson's Yngling crew earned the sailing gold.
The cyclist said he was acutely aware of the importance of drinking enough water.
"Children and adults need to be more aware that drinking water not only quenches your thirst but also leads to a healthier body and a healthier mind," he added.
Adults are being urged to drink two litres of water every day
Robertson said drinking water is essential to stay properly hydrated.
"It has proven health benefits whether you're taking part in sport or just looking to lead a healthy life," she said.
"The message is clear to Scots in all walks of life to stay healthy - 'make sure you're drinking water'."
Scottish Water's Cheryl Black said it was encouraging people in Scotland "to go for gold" to improve the nation's health.
"The campaign encourages all children and adults to make sure they are drinking the right quantities of water to help keep their minds and bodies healthy," she said.
"Concentration, agility, and the general health of your body can all be improved by drinking water. This campaign is a simple reminder of how critical drinking water is to everyone's health."
Scott Meal, Headmaster at Davidson's Mains Primary, said the school gave pupils water bottles on their desks which they could refill at any time.