Hugh Jackman and the 85% Rule

Hugh Jackman on The Tim Ferriss' Show:

If you tell most, sort of, A-type athletes to run at their 85 percent capacity, they will run faster than if you tell them to run 100 because it's more about relaxation and form and optimizing the muscles in the right way."

According to Jackman, the rule came from a man studying Carl Lewis, the sprinter.