Petits Filous 'Lundi Mardi' by McCann Erickson
Yoplait has unveiled a £6m marketing campaign to encourage parents to introduce more calcium into their children's diets.
The 30-second spot shows a group of children playing in a French farmhouse through games such as tug-of-war and wheelbarrow racing.
The children's energetic activities are designed to reveal their strong bones and the calcium properties of Petits Filous.
The ad, which was shot in South Africa, uses the song 'Frere Jacques' but with the words changed to the days of the week in French.