Adopted from the following great insight shared by Jim Collins from the book Great by Choice
“WHY 20 MILE MARCHERS WIN 20 Mile Marching helps turn the odds in your favor for three reasons:
1. It builds confidence in your ability to perform well in adverse circumstances.
2. It reduces the likelihood of catastrophe when you’re hit by turbulent disruption.
3. It helps you exert self-control in an out-of-control environment.”