Don't breath, else you will age.

Free radical theory on ageing says that the free radicals( of oxygen) formed during breathing reacts with our body cells and cause functional decline of organs over a period of time. The following article(Study on mice reinforces free radical theory of aging) doesn't mention about breathing as the cause of free radical production but I read it somewhere else. So people don't breath or you will start ageing. Is it the reason why the sages and saints practised yoga to control breathing and reduced the number of times they breath and lived longer?