The answer is …

Mitophagy!

CoQ10 helps mitochondria produce energy by shuttling electrons and acting as an antioxidant. In contrast, Urolithin A uniquely activates mitophagy — a cellular cleanup process that clears out dysfunctional mitochondria, enabling the growth of fresh, high-performing ones.

Think of it like this: CoQ10 keeps your existing engine running smoothly, while Urolithin A brings in the crew to overhaul and upgrade the engine components.