There are pranayama yoga techniques which include breathing control.
So far there has not been enough research to show if yoga breathing techniques are effective or not for people with asthma. This is why NHS respiratory clinics do not routinely offer this as a treatment for asthma.
Some people with asthma find that yoga helps to relax the body. There are many types of yoga but if you have not practiced yoga before it can be difficult to do some of the positions. Find out about basic or beginners classes. If you do decide to try yoga, make sure you go to a recognised yoga centre and tell your instructor that you have asthma. Take your inhalers with you.
Do not stop taking your asthma inhalers or medication