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Up to 120 may be a bit too much, but there are those for whom this number is realistic.
Olive Edwards, a great-grandmother who celebrated her 109th birthday last week says the secret to longevity is being "stubborn" and drinking "lots of water".
The retired teacher who is a mother of two daughters, and has four grandchildren and six great-grandchildren, revealed that she also eats three meals a day, and prefers everything - salmon and asparagus.
Indeed, for her birthday lunch, she enjoyed salmon and vegetables specially prepared by the chef at Birchlands Nursing Home in North Yorkshire, England.
"This is a wonderful achievement for Olive," said a spokesman for the nursing home.
"She said she didn't want noise, but of course she would indulge in a celebration with the house staff, the tenants and her family members."
Edwards was also presented with a cake that resembled a flower basket and a special card from King Charles III who congratulated her, just as her Queen Mother did a year ago, on her arrival on her distinguished birthday.
Edwards was born in 1914, and she taught very young children for years.
She said she loves to exercise, even in her later years.
"I enjoyed going," she told Jam Press.
"When I was 80 years old, I used to play football and cricket with my grandchildren."
She now spends her days reading, knitting and sewing.
Although 109 is certainly an impressive age, Edwards is not the oldest living person.
Maria Bernias Morera
Mora from Spain was awarded this title last January by Guinness World Records.
At the beginning of this month she turned 116 years old.
Morera received the honor after the death of French nun Lucille Rendon, better known as Sister André, at the age of 118 in January.