Health benefits of sanchin and tensho?

From the very heart of Goju Ryu Karate these two katas come from. Back in the day when my wife first started Karate do cles she had asthma, and she feared because of that fact that she would never become vary good at Goju Karate. She never gave up and she kept on and kept on untill she had lost all of the symptoms of asthma. I Truly believe that these type katas and breathing exercises knocked out her asthma.