Willpower, good memory, unwavering motivation, and psychological resilience are traits we tend to regard as stable and attribute to character. Yet from a neurobiological perspective, they are the result of the brain’s biochemical balance. A balance that can be shaped.

Sunny Saturday morning. The heat is softened by a fresh ocean breeze. Table Mountain, as is its habit, has wrapped itself in clouds. We gather at Expand Health, South Africa’s first holistic longevity hub, where the air smells of sandalwood and quiet ambition. Sharp light floods the space through huge windows and fiddle-leaf figs. Somewhere in the background, a hyperbaric chamber and red-light panels wait for someone to climb in and become a better version of themselves.