3. Mental toughness is a term so nebulous as to be useless. Is the ability to tolerate pain high intensity exercise a feature of mental toughness? Sure. Is the ability to do boring, repetitive stuff and control your emotions and impulses also a feature of mental toughness? Everyone would say yes. Let's take a look at Jonny Hendricks- NCAA champion wrestler, UFC champion, professional fighter and now cop. Is he mentally tough? Everyone would say yes. He was also notorious for not being able to control his eating and stick to a diet in camp, and missed weight numerous times throughout his career. Everyone would agree that is not mentally tough. How can the same guy be mentally tough and weak at the same time? Because it's a nebulous umbrella term we use to describe a bunch of different qualities. What does 4th quarter bullshit style training tax? Maybe pain tolerance at a push, but nothing much else. I would hazard a guess that if you can make it all to the way to Alabama in a collision sport like football, an all the youth and highschool training up to that point, you're OK with pain. The game naturally filters those kids out. My experience and the media circus around football would would suggest there are much bigger problems with the emotional control, cognitive focus, lifestyle habits, communication etc aspects of mental toughness than the ability to deal with physical discomfort. There are HOF players who lacked the emotional control to not murder family members or put down drugs and alcohol. There are very good pro and college players who can tolerate high levels of suffering but who crumble under bright lights. If you think running 110s fixes all that, good luck.