Clever marketing

I have been quite a big fan of SAS - Who Dares Wins in which exceptionally fit people, usually with some kind of interesting back story. They are subjected to physical and mental challenges and the original number is whittled down to a small, brave few who are then subject to the interrogation phase. The interrogation section involves putting candidates in stress positions and when I watch it I'm amazed at how long people stay in what must be painfully uncomfortable positions where the body has given up, but the mind is forcing the body to comply. I'm also a bit of a yoga fan, if turning up once a week and looking forward to the corpse (shavasana) pose counts. I'm the only one in the family that gets involved and I don't know anyone else in the class, except the teacher. For me it's a bit of escapism. I run there, walk home and try my best during the in-between bits. This week, after doing some of the yoga poses and thinking "Flipping heck, this doesn't look difficult but it doesn't half hurt" I had a further thought: "Yoga is simply stress positions with clever marketing."