Why You Can Ride a Bike for an Hour But Can’t Walk to the Mailbox
There is a pattern of back and leg pain that behaves unlike anything else, and once you know it you cannot miss it.
You can stand for a few minutes before your legs start to ache, cramp or feel heavy.
Walking makes it worse, and the distance you can manage keeps shrinking. It used to be a mile. Then a few blocks. Now it is to the end of the street.
But sitting down fixes it within a minute or two.