There was a sweet smell of incense   in the air as the wellmuscled man moved his legs into a position well behind his head.It was something that the human body really should not be able to do.But what else would you expect at the First World Yoga Championships? On September 25,the world's leading yoga experts arrived in the US to find out who was the best.But the real prize was to turn yoga into a proper Olympic event. "Yoga is a combination of bodybuilding,Miss World,Mr Universe and gymnastics," said championship organizer Bikram Choudhury."There are some 70 people from more than 20 countries competing in this event.Why not have yoga at the Olympics?" The public cannot decide whether or not Choudhury's dream will come true.But he is right about one thing:yoga has become popular with young and old people all over the world.In the US alone,15 million people practise yoga.Everyone is at it,including Madonna and Ricky Martin. Yoga started in India more than 5,000 years ago.The name means "to join together".That is to bring the body and mind together into one pleasing experience.The whole system of yoga is built on three things:exercise,breathing and meditation  . The yoga that we know today is mostly physical yoga.It's seen as a type of exercise,but is different from sports like football or running.When we do yoga,we move our body into positions that stretch the muscles and joints,making them stronger. One of the best things about yoga is the fact that everyone can do it.To women,it means a flat stomach,more shapely legs and a graceful body.To men,it is a way of becoming stronger and more athletic. There are also speciallydesigned yoga classes for pregnant women or children suffering from mental disabilities,such as autism  .As for teenagers,meditation and simple breathing exercises can help them learn to calm down,relax and concentrate better.But teenagers under  16  are  not supposed to do the body exercises as it could have a bad effect on their natural growth. According to the passage,who does not need to pay special attention in practising yoga?
Women to be mothers. Teenagers under 16. Adult men. Children with autism.