This is little off-topic, but its sneak peek into our history of running. After all, it is first sport we as humans have been involved in.
Chris makes case that running comes naturally for us and advises to keep on running. That is what we have done for last 2 million years as whole humanity.
Otherwise, it is difficult to imagine thousands of runners getting up in the cold morning and lining up for the 26-mile marathon.
No other species do that just for the ‘love’ of running 🙂