Physical education for the body to be effective must be rigorous and detailed, far sighted and methodological. This will be translated into habits. These habits should be controlled and disciplined, while remaining flexible enough to adapt themselves to circumstances and to the needs of growth and development of the being.
But if one observes, one will see that the body has its own intelligence; it requires a great deal of intelligence to observe the intelligence of the body.
I see that any materialism in life coarsens the soul, and that the hunger of the body and the appetites of the flesh desecrate always, and often destroy.
On the contrary, there is a considerable body of evidence that these fossil traces, known as 'dino-fuzz', have nothing to do with bird feathers... I, and many others, do not find any credible evidence that those structures represent protofeathers.