I’m 20 and my girlfriend is 19. My girlfriend has Cystic Fibrosis and i invited her to stay over for a few days with me at my place. I was kind of surprised when she first told me about her disease. I know she has pretty low lung function and will have a lung transplant eventually. But how is the physiotherapy done and in what ways and how often? Do they usually do it on their own or do they often need someone to help them? Should I know how to do it with my girlfriend?

I have identical twin girls (they’re 16) who have Cystic Fibrosis, they have always been in the same environment, but they seem to have two different severity levels of Cystic Fibrosis, one of my twins is sick very often and has had to spend numerous amounts of time in hospital, has much lower lung function, needs a feeding tube, and will need a lung transplant eventually, my other daughter does not get sick and get infections that much and has always been a lot stronger. What actually causes the differences since they are identical twins?