I'd call that a poor excuse. The bodybuilder can name and point to the muscle he's exercising. He doesn't practice by lifting some random heavy object (piano, c

I'd call that a poor excuse. The bodybuilder can name and point to the muscle he's exercising. He doesn't practice by lifting some random heavy object (piano, car, girder) that might not even use the muscle group in question. When I see education justified with that excuse, I'm tempted to say "OK, replace that with a targeted exercise", because I know the reaction would be horror. Exercise is the way you sell the task to skeptical persons. The actual aim is to require them to learn the capital of Colombia. Just because. And that is ridiculous.