In the UK, 29% of girls are overweight. In the US, 36% of black girls, 37% of Hispanic girls and 29% of white girls are overweight or obese. But why are the numbers so high? How can girls be taught healthy attitudes, and encouraged to try sport from their first day at school?

Every January, many people rush to the gym - but by February, lack of interest means they give up. Creating a community around exercise, Fitmob is a fitness programme that’s redefining what it means to be truly committed to getting fit.

If running for the bus leaves you wheezing and breathless, you’re not alone – a fifth of Brits can’t run more than 100 metres. More than a quarter are overweight and 80% don’t exercise enough. And new research reveals a worrying paradox – many Brits don’t feel they’re fit enough to exercise.

After the clock strikes midnight and the champagne bottle’s emptied, January 1st welcomes the most hopeful of traditions – New Year’s resolutions. But why do they rarely last beyond January? Lizzy Pope, who studies health behaviours, explains why people find it hard to stick to their goals.