The world’s oldest person has lived through two World Wars and the invention of the first airplane, but it doesn’t seem like a long time to Misao Okawa.

“It seemed rather short,” Okawa said on Wednesday, the day before her 117th birthday, the Associated Press reports. When Okawa was asked about the secret to her longevity, she said nonchalantly, “I wonder about that too.”

Okawa was born in Osaka on March 5, 1898 and was recognized as the world’s oldest person by Guinness World Records in 2013. She has slowed down in recent months but still eats well and is healthy, according to her Osaka nursing home.

She married her husband, Yukio, in 1919, and has three children, four grandchildren and six great-grandchildren. Her husband died in 1931.

Japan has more than 58,000 centenarians, more than any other country in the world.

Read next: 13 Secrets to Living Longer From the World’s Oldest People

[AP]

Read next: Europe’s Oldest Woman Says Being Single Helped Her Live to 115

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