Mitochondria is a rather simple structure, using the brain as a comparison is a profoundly absurd comparison that only an individual tentatively versed in biology would suggest. Scientific wisdom advanced human society 1000 years in a matter of decades. To scoff at our best known process to understand natural laws only exposes you as an intellectual charlatan. An idea that our universe is expanding is not absurd, proving it is something else. The idea that mitochondria manipulates the force (all we need to do is "talk" to them), assumes there is already a force to manipulate as well as billions of years of mitochondria retaining these evolutionary traits just waiting for us to one day use them. If the force exists, mitochondria does not have the machinery or structural complexity to suggest it does anything else other than aerobic respiration through the Calvin Cycle. All it does it generate ATP, which releases more energy upon breaking down into ADP than it takes to create ATP from ADP.
I will say that how efficiently mitochondria produces ATP does affect your ability to perform in many different aspects. As you age, your mitochondria ages, and performs with less efficiency.