Also, the worst use of Occam's razor I've ever seen. By your logic, superficial observation and intuitive models of reality are more likely right than in depth, much more-complicated science.

How is a process of building muscle through exercise, which humans have been doing for hundreds of years, and which is extremely well understood by modern science more likely wrong than a bizarre metaphorical similarity to how physical objects degrade due to stress? Use it or lose it is our latest understanding of both the mind and the body.