Slogging through the setbacks

I have been out of commission for awhile with severe bronchitis and something called hyper-reactive airway syndrome, whatever that means. I spent 2 days in the hospital and am currently working from home because doing things like going outside in the cold distresses my lungs. At what point did I become an old person? I am back to working on my big paper and will hopefully have more to say on that matter soon. Cheers!