Before the Fall, the body did not corrupt, as it was united and in perfect subjection to the soul.  That was not a preternatural or supernatural state at all, but the natural state in which God created man.  In fact, even the purely material components of the world that God will establish after the Last Judgment will not be subject to corruption.

Nope, not so ......


https://www.newadvent.org/cathen/06553a.htm

"A supernatural gift may be defined as something conferred on nature that is above all the powers (vires) of created nature. When God created man, He was not content with bestowing upon him the essential endowments required by man's nature. He raised him to a higher state, adding certain gifts to which his nature had no claim. They comprise qualities and perfections, forces and energies, dignities and rights, destination to final objects, of which the essential constitution of man is not the principle; which are not required for the attainment of the final perfection of the natural order of man; and which can only be communicated by the free operation of God's goodness and power.

"Some of these are absolutely supernatural, i.e. beyond the reach of all created nature (even of the angels), and elevate the creature to a dignity and perfection natural to God alone; others are only relatively supernatural (preternatural), i.e. above human nature only and elevate human nature to that state of higher perfection which is natural to the angels.

"The original state of man comprised both of these, and when he fell he lost both. Christ has restored to us the absolutely supernatural gifts, but the preternatural gifts He has not restored.

"It may be well here to say a few words on the preternatural (relatively supernatural) gifts bestowed on our first parents, which are sometimes confused with the supernatural gifts properly so called. In the beginning God exempted man from the inherent weakness of his nature, i.e. the infirmities of the flesh and the consequent infirmities of the spirit. He made man immortal, impassible, free from concupiscence and ignorance, sinless, and lord of the earth. These privileges are beyond man's nature, but not beyond that of some higher creature (e.g. the angels); hence they are preternatural (praeter naturam). The Fathers look upon them as a glorification of nature, applying the words of Psalm 8:5-9.

"In point of fact these gifts were not conferred apart from the supernatural gifts; a preternatural state is, however, conceivable, and the separability of the two sets of gifts is clear from our now possessing the supernatural without the preternatural gifts. "Although distinct and separable, unite into one harmonious and organic whole. The Fathers look upon this union in the original state of man as an anticipation of his state of final beatitude in the vision of God, so that grace bears to integrity the same relation which the future glory of the soul bears to the future glory of the body. Integrity and grace, when combined, elevate man to the most perfect likeness with God attainable in this life; they dispose and prepare him for the still more complete likeness of eternal life"."