India, Feb. 19 -- At an age when many are slowing down, Jim Arrington is scaling up. At 93 years old, the California-based great-grandfather isn't just 'active' - he is the official Guinness World Record holder for the oldest competitive bodybuilder. Also read | 94-year-old man's daily routine proves longevity doesn't require 'costly gym membership, supplements, protein powder'

While his grit in the gym is legendary, Jim once revealed that the real battle for longevity was won in the kitchen. By ditching the traditional bulking staples of his youth, he explained how he has managed to defy the biological clock.

For decades, Jim said he followed the classic bodybuilding blueprint: heavy weights and even heavier protein from dairy and meat...