By Sarah Holt
There's no denying that yoga is big business. Around two million people in the UK take part in regular classes, while across the pond in the USA, it has a following of more than 36 million.
No-one can pinpoint exactly when the practice of yoga began. However, most scholars agree that it predates written history. Stone carvings depicting yoga positions have been found at archeological sites in India's Indus Valley that date back to around 2,500 BC.
One of the earliest texts relating to yoga was compiled by a scholar named Patanjali somewhere between the first and fifth century BC. In The Yoga Sutras he brought together all the relevant yoga theories and practices of the time and made them into an early form of a manual.
The insight from that book is still depended on today. Most variants of modern yoga harness some, if not all, of the elements of 'the eight limbs' that Patanjali wrote about.
Throughout history, yoga practice has always differed between practitioners. History has seen yoga splinter from vedic yoga, to bhakti yoga (a form of devotional yoga), to karma, jnana, Buddhist, jaina, raja, hatha, tantric, Iyengar, viniyoga and Bikram yoga. And that's just the tip of the iceberg.
The 21st century has seen further diversification as far as types of yoga are concerned. Driven by competition, teaches have developed increasingly unusual forms of the practice in order to make themselves stand out from the crowd.
Yogis around the world can now attend reggae yoga and heavy metal yoga. In the USA goat yoga, in which practitioners do yoga moves with goats as props, has just begun to take off.
One of the most contentious new strands of yoga, however, has to be alcohol-linked yoga. Yoga and wine retreats started appearing around 2012 and now they're ten a penny.
In November 2016, the Independent reported that the world's oldest yoga teacher 'loves wine and never drinks water'.
At the start of April, a Manchester yoga provider stared advertising Yin & Gin classes - yoga sessions that culminated in a glass of gin and tonic.
But it's beer yoga that's really captured the attention of the public recently. The concept started in Berlin before popping up in Australia and the first classes have just launched in the UK.
But is it good for you? And would Patanjali be cracking open a bottle of Bud if he was alive today?