Rachel is 49 years old. during her yearly physical she was told that her heart and lungs are losing capacity as a natural part of the aging process. rachel replied that she did not notice any change and that she felt as she did when she was 25. rachel's inability to notice any change in her breathing and heart can be attributed to:

Organ reserve

Explanation:

Organ reserve is related to the physical changes in which an organ of an individual returns to its original state with many episodes of stress. Organ reservation is typically related to the older people cope up with the stressful situation that is related to the aging. But it is not clearly defined n the molecular form. It happens when someone loses the function in old age because of aging. Aging changes in the body cells, tissues and organs, and these changes are related to changes in the body functioning.

answer; i believe that the correct answer is (scientific approach)

answer; existed; limited;