Briton John Tinniswood has revealed his secrets to living longer.

"One word… moderation. Don't eat too much. Don't drink too much," Tinniswood advises, according to Hindustan Times.

Also, "try and keep yourself fit."

Tinniswood walks around the nursing home, where he stays, with a shopping trolley for support, and swings his feet daily. He also eats fish and chips every week.

The proof that his advice works is himself. Britain's oldest man celebrated his 111th birthday last month with family and friends at The Hollies care home in Southport, England, Hindustan Times reported.

The man born in the year the Titanic sank received a birthday card from King Charles and Queen Camilla. But the highlight of the occasion was his demonstrating his sharp memory.

Tinniswood still remembers his first day of school at age five, the first day of his employment, meeting his wife at a dance in Liverpool, his wedding day in 1942, and his two meetings with Queen Elizabeth.

For Elizabeth Francis of Texas, never drinking or smoking and eating everything are the keys to longevity.

Francis cooks and eats vegetables that she grows in her backyard, her granddaughter, Ethel Harrison, told KTRK-TV. She has never eaten in a fast-food restaurant.

Like Tinniswood, Francis celebrated her birthday with family at her Houston home last month. It was a rare occasion as the supercentenarian turned 114, making her the oldest living person in Texas.

Even more amazing than Francis's age is the five generations of her family that graced her birthday. Present were her daughter, Dorothy Ray Williams, 94; two grandchildren, including the 68-year-old who serves as her caregiver; five great-grandchildren; and four great-great-grandchildren.