Same thing happens when body builders work on their pecs, abs, and biceps because they can see those regions in the mirror. They never build their core, legs and backs.
Not just that but bodybuilders never incorporate exercises that use multiple muscles together. They isolate muscles. Our bodies are not built the way they train them, nor what they train them for. Our bodies are built to have muscles working together.
Our muscles/bodies should be trained the way they are built to work. Which means mobility, agility, strength, endurance, flexibility, plus whatever else - all of them, which also would mean having a very good physical appearance, something like an athletic body.
For the last week I've been writing down different exercises (including different variations of same exercises) that can be done in the gym, primarily with weights. Currently have about 700 exercises (about a hundred of those are for abs/core...). People in general maybe use only 50 of them (among which some few are very bad exercises that should never be done at all; and only about 5 for abs, I don't think they are even aware there's such a thing as "core", or just 1-2 exercises for core), and even those they mostly do wrong.
