Marshall Ulrich putting up with pain

Had a rough few days with a sickness bug.
It's been a while since I felt so rough
That feeling of no energy, can't do anything, can't get too far from the toilet.
Then I came across this article by Marshall Ulrich on putting up with pain, suffering and endurance.
You can read it here
Humbling really, shows you how you can put up with so much if you put your mind to it and are in good shape.
Need to run soon!