Fighting fit?

They say it can take 6 months to fully recover from MdS.  Really?  6 weeks later I look physically fine.  I'm now 11 stone 3 pounds, my heaviest ever, so any weight loss has been made back.  My feet are almost completely healed although they are a bit dry and flaky.  I have known for a while that I needed a cyst removed from my chest so I had that done 10 days ago and the stiches came out today but it will be at least 2 weeks before I can put any pressure on my chest so that means no swimming for a couple of weeks and no yoga.
So I've restricted my training to cycling and running.  My first ride was a week ago with 25 miles, Tuesday 40 miles and yesterday 44 miles.  I have felt tired on each ride and my average speed is back to where it was three years ago.  But I survived and each session makes me feel fitter.
My Chi running has been sporadic and while it feels good at the time I hurt in new places afterwards and I'm giving myself time.  This is all part of the change to Chi running.  No big distances, just feeling what's going on with my body.
So 6 weeks ago I was super fit.  Now I'm not but I am taking the an active route to recovery, just not pushing it too hard.
A friend of mine is doing Lands End to John O'Groats in 3 weeks time and I am hoping to join him for one stage i.e. 100 miles.  That's going to take a lot of effort but a goal worth pushing for.  I hope when I report back next week I'm fighting fit!