Favorite Toughness Metric

I think the most accurate metric is:

[1.3(milligrams of painkiller)+.9(ounces of alcohol per week)]/number of body parts on injury report = Get Ready Its Torn (GRIT) Factor

I do not believe people are quick healers.
A tweak is medically synonymous with a tear, no matter what Holmgren wants you to hear.
Percentage of muscle bundle torn should appear in the Game Book as an official stat.
A concussion is a net positive for GRIT (you don't know you need to come out).
Ammonia capsules are underrated.
ACE bandages are overrated.
Losing feeling in your toes while icing is counterproductive.

What about Icy-Hot?

I think Youngblood set the standard - if you are not willing to play with a broken bone, what kind of player are you? So Clay>>Rodgers in toughness. Cast/broken thumb>>torn calf muscle.