High-priority alert based on source significance and keyword relevance.
Context
What happened: A 90-year-old Japanese bodybuilder competed in Spain in a masters category open to athletes aged 50 and above, and said he is considering one more competition at 93 before retiring.
Key numbers: Age 90 at competition; considering a final appearance at 93; masters category open to ages 50 and above; he changed his diet at 50.
Why it matters: He said he hopes his participation encourages older people to stay active, and that he wants to be a role model for those pursuing goals as they age.