Sometimes when politics, social media, refugee crisis, and the epidemic of 60-hour-work-weeks are at the forefront of life, it can seem like yoga – with its simple breathing and moving and making sound – is superfluous at best, and damaging at worst. I only need to open the pages of yoga magazines, or look at my instagram feed, to despair at the many ways in which the yoga industry is capitalising on human insecurities - to say nothing of feeding the myth of the perfect body.