PQQ is classified as a redox cofactor, which plays a vital role in cellular metabolism. One of its most lauded benefits is its ability to promote the growth of new mitochondria, a process known as mitochondrial biogenesis. Mitochondria are often referred to as the powerhouses of the cell, and they generate the energy required for various cellular processes. As we age, mitochondrial function tends to decline, which can lead to decreased energy levels, cognitive decline, and various age-related diseases. By supplementing with PQQ, individuals may potentially support mitochondrial health, therefore enhancing overall energy production and cognitive function.