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?

Yoga has a long religious history in India, but modern Indians are taking cues from the West and replacing spirituality with weight-loss and Instagram selfies. This once 'uncool' practice is fast becoming big business - but some fear the 'real' yoga is being left behind.

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.

In an attempt to revive the brand, Reebok has forged a ten-year alliance with CrossFit, a rapidly expanding underground fitness community. The collaboration offers a guide for any brand hoping to marry itself with a passionate community.