In life, there are certain bonds that bring the best out of people: professor and student, parent and child, and mentor and mentoree, to name a few.
When paired correctly, these relationships create individuals that are prepared to overcome challenges and use experience to their advantage. If the pupil is ever in need of support, they know who they can rely on.
As an athlete, specifically in the game of football, players have the advantage of incorporating several bonds into one with their coaches. Outside of drawing up plays or being the guide for how to read a defense, coaches are there to teach skills of adulthood, be a parental figure and prepare their athletes for life beyond football.