What really keeps the brain sharp as we age — and what quietly puts it at risk? In this episode of the Ageless Athlete Podcast, host Kush Khandelwal speaks with Dr. Tommy Wood, neuroscientist, physician, and strength athlete, about the science of cognitive reserve and why long-term brain health depends on challenge, learning, and effort — not comfort or flow. Flow states feel rewarding, but as Dr. Wood explains, they don’t create the kind of stimulus the brain needs to adapt over decades. Ins...