I hope you enjoy my take on brain age video. You can age your brain in an optimal way, so that it continues growing new brain cells every day (neurogenesis) and making new connections because you are presenting it with novel learning challenges (neuroplasticity) or you can age your brain with stress hormones, processed food, poor nutrition, no exercise, poor sleep, booze, drugs, volatile organic compounds, and so on, and your brain will quit working for you.
I personally like my brain working at its best for me, so I work to provide it with the things that Simon Evans, Ph.D. and Paul Burghardt,Ph.D. advocate in their excellent e-book,
Brainfit for Life.