A study published March 2011 in the journal Proceedings of the National Academy of Sciences found exercise to halt AND even reverse the signs of aging in mice. . .in virtually every tissue and organ.
According to Dr. Mark Tarnopolsky, the study goal was to evaluate the systemic effects of exercise and to find a therapy (i.e. activity) that most people could do if they wanted to. The study focused on cell mitochondria. Mitochondria are found in every cell where food and oxygen are converted into energy. Evidence is showing that as we age our mitochondria break down causing cells to break down. This contributes tissue and organ breakdown leading to signs of aging, such as mental declines, wrinkles, and hair loss.