The mitochondria have their own DNA and these cannot be repaired the way the DNA in the cell nucleus can be. I was relieved to see that the results of my own VO2 test showed above average resting oxygen usage metabolism for my height and weight. There is no doubt in my mind that eating a nutrient dense diet, taking good quality supplements, doing the required detoxification therapies to eliminate known mitochondrial toxins, and then going back to running and other aerobic types of exercise prevented mitochondrial decay that may otherwise have occurred.
For more information on Oxygen Therapies visit https://cienciasnaturalesdelasalud.com/natural-therapies/oxygen-therapies/