Michael discovers fascinating ways to boost the brain. Can skydiving supercharge your memory? Does acting like a child keep you young? And how meditation rewires the mind to keep you feeling Zen.

Michael meets the 84-year-old Yorkshire ballerina who proves age is just a number, and learns why people on the Japanese island of Okinawa are living longer. Plus: how hopping could benefit our bones.

What is the secret to looking good and how can we keep looking good over the years? It is believed that around 60 percent of Americans use some anti-aging product, but what control do we have over our appearance in old age?

For most people, the risk of getting sick increases with age. Dr. Mosley finds out how we've become better at fighting infections, looking for the secrets to keeping our bodies healthy on the inside, starting with the immune system.

Throughout human history, aging has been our inevitable fate, but is it still so? As extraordinary as it may seem, there are scientists who believe that it is possible not only to slow down, but even to reverse this aging process.