We see the bulk of human action as being composed of a limited number of irreducible fundamental movements. These fundamental movements we call functional. They include, but are not limited to, squatting, deadlifting, cleaning, lunging/running/walking, jumping, throwing, climbing, and pressing.

Interesting, intelligent, useful information about the pull-up is not easy to come by.

The deadlift keeps company with standing, running, jumping, and throwing for functionality but imparts quick and prominent athletic advantage like no other exercise.