Protect your lungs
Tom Wingfield, a physician and clinical lecturer in infectious diseases at the Liverpool School of Tropical Medicine, says you should avoid anything that damages your lungs – stop smoking, and don’t expose others to secondhand smoke. “Open fires are not great, and if you have allergies that irritate your lungs, avoid what you can.” One upside of the lockdown is that air pollution has decreased. And, says Wingfield, “[general aerobic] exercise will help your lungs”.

Source: Do breathing exercises really work? – The Guardian