Imagine being born in a time before electric lights, television, phones andcars were normal and living through two world wars – and still being alive in2018.
Richard Overton, a 112-year-old from Texas, has done just this and,staggeringly, he credits his survival to up to 12 cigars and four glasses ofwhiskey every day.
Living to be older than 100 is rare but becoming more common – the UNexpects there to be 3.2 million centenarians worldwide by 2050, up from 316,600in 2012.
And, according to a website that trawled through interviews with 100 peoplewho reached the landmark birthday, the secret to surviving may not just be ahealthy diet.
A pint of Guinness every day, eating pigs' feet and kicking out yourhusband are all genuine nuggets of wisdom from people who have lived to 100 andbeyond.
US senior citizens' advice website, A Place for Mom, searched throughnewspaper interviews with the world's oldest people to pick out their tips forliving for so long.
On the list of people offering their wisdom was Jeanne Calment, who died in1997 as the oldest woman ever at the age of 122.
And above her, Leandra Becerra Lumbreras, a Mexican woman who died in 2015claiming to be 127 years old – though her birth date was never confirmed.
While a quarter of centenarians credit a healthy diet for their long lives,even more of them – 29 percent – recommend indulging in unhealthy treats likegreasy breakfasts and fizzy drinks.
And exercise isn't a popular habit among the super-aged either – only 21percent of them said regular workouts were what kept them ticking over.
The 10 most common tips for ageing gracefully were predictable enough –watch what you eat, stay active and maintain relationships.
But many of the centenarians' suggestions were downright rebellious.
Ms Calment – who was married for 46 years and then lived for another 55years after her husband died – credited olive oil, wine, cigarettes andchocolate for living so long.
Mr Overton, a World War II veteran who is thought to be the oldest livingman in the US, says ice cream also helped increase his lifespan, alongside thecigars and bourbon.
Emma Morano, an Italian woman who lived to 117 before dying last year, saidshe owed her long life to kicking her husband out and never marrying again.
Jeralean Talley, from Michigan, lived to 115 thanks to 'eating plenty ofpigs' feet'.
Other people's unlikely fountains of youth have included 'going with theflow', 30 cigarettes a day, five to seven push-ups a day, and a daily pint ofGuinness.