Well I'm early 40's but I was diagnosed with a chest infection in December which unfortunately turned into bilateral pneumonia leaving me hospitalised for 10 days over New Year. I've been off work now for 2 weeks and have just been signed off for another week as still not great. They told me it could take 6 months before your lungs fully recover.
I've suffered a lot from chest infections over the last few years so a bit prematurely perhaps I promised the wife and family that I'm going to stop running for the year to see if my health improves. I'm hoping at my follow up appointment next month the doctor might have some ideas on how I can prevent the chest infections and help me change their minds so I can go back to running
That said the events I am registered for from Feb - Apr I'm already looking to defer or get refunds where I can as I'm not walking that far at the moment so jogging isn't going to be anytime soon.