There's a latent agenda to this style of journalism that's about the business of business:

//When she and her colleagues experimentally boosted mitochondrial output in the rats, the neurons recovered, and the animals showed fewer signs of anxiety. In a subsequent study, she and her colleagues showed that a commercially available supplement (opens a new tab) produced the same positive results. “It restored everything,” Sandi said.//

What is Picard's theory? That energy boils from the surface of the sun, emanates through space, shines on the earth, induces life, then a bad mood happens, which can be detected by a specialized measure of a mitochondrial energy quotient and fixed with a patent elixir?

//“They have to pay a 180-calorie tax every day of life,”//

And after all they end up dying just like everyone?

Death and taxes, omg!

//...said that the chamber study shines a light on the “control systems in our bodies regulating the calories we burn each day — systems we have yet to fully understand.”//

There's a lot more that's not completely understood, like gravity...

//“Picard and his team have helped open the door on these systems and set the stage for future work in metabolism and health,” he added.//

"Shine a light, open the door, set the stage"! Look for a subsequent article titled The Gorgeous Metaphors of Science.