Five years ago I was asked to go on a yoga retreat. My editors said they wanted to send a grizzled foreign correspondent, in order to compare the rigours of war zones and ashtanga. No one had ever called me grizzled before (or since). It was only once in situ that I realised I was the victim of a cruel joke, designed to inflict maximum humiliation on my spindly frame.
For yoga, it quickly became clear, is astonishingly hard work. Our silver-haired instructor, Simon, occasionally inquired if "we could see the point" of various excruciating exercises. I found I was rarely able to see anything, due to the tears of pain. On the other hand, I could clearly hear the sound of my vertebrae making various bids for freedom.
So it comes as no surprise to me that a new Harvard University study has revealed that yoga is as good for you as, you know, "proper exercise" - things like cycling that make you pour with sweat and you think (or hope) that you are about to die. You have to go to Harvard to discover this? When I underwent my yoga initiation, I, too, poured with sweat and thought I was about to die. No one gave me a PhD.
Still, the serious physical demands of yoga, even of the slow-paced hatha variety, have long been underestimated by one constituency: men. Yes, for decades the only men in Western yoga classes were the Eastern gurus themselves, sitting at the front, smiling serenely and preaching the benefits of the kind of flexibility that allows you to see the soles of your feet without the benefit of a mirror. Well-heeled women queued to hand over their cash. But not us chaps.
When I was pitched into the fray back in 2009, men made up less than a quarter of the devotees attending to Simon's every word, reflecting national averages. Some of these chaps, I suspected, were not there for the exercise. At least not in class. One had met his girlfriend on a luxury yoga retreat in Egypt, during which four others had coupled up. "There are men who have realised that most of the people on these retreats are women and an awful lot of those women are single," Simon told me.