Fought in the cage for nearly twenty years. Studied the science afterward. Now taking both to Mumbai. On 15–16 August 2026, Tateki Matsuda speaks on the Main Stage at Longevity Summit India 2026 at Fairmont Mumbai, with a talk titled The Fighter's Paradox: Stress Makes Us Stronger — Until It Doesn't. The summit is built on a five-dimensional framework — Earth, Water, Air, Fire, Flow — and is chaired scientifically by Dr. Arpit Bansal, who joined HOLOLIFE Summit Tokyo in 2025. Tokyo to Mumbai: the direction reverses.