I found this MRI cross section via JayParkinson, of leg muscles utterly fascinating.
40 Year old triathlete
74 year old and sedentary
74 year old triathlete
Whilst Jay's post is dedicated to what our muscles will look like if we remain active, I think the analogy works perfectly well with innovative thinking. The more we use our brains to be creative and get out of our comfort zones, the easier it will be to take risks and embark on the journey of entrepreneurship
To tweak what Aristotle once said " We are what we repeatedly do. Innovative Thinking, therefore, is not an act, but a habit ".
So what Innovative/impossible thing are you working on today?!