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No one would do that, surely? Of course, that's not the case. Take Ari Rastegar as a prime example. He's 39 but claims to have the body of someone much younger. 34 years younger in fact.
The dad and real-estate tycoon has been visiting a clinic in Mexico over the last 18 months for stem-cell infusions which is a scientifically unproven procedure that cannot be carried out in the US.
The treatment, which is believed to cost around $7,000 ($4,900) a time, involves the extraction of blood that is 'spun' in a centrifuge to separate red and white cells before being reintroduced to the body full of health-boosting platelets.
Speaking to the New York Post, he joked: "I always joke that, apart from my baby daughter, I'm the youngest Rastegar. I think my lifestyle and health give me the competitive edge."
Rastegar opts to receive his own stem cells rather than those taken from the umbilical cords of newborn babies.
He went on: "They inject between 15 million and 100 million stem cells directly into the vein for overall health and wellness.
"It's bish bash, get what you need in 15 minutes, and then you're back in the car."
Rastegar, who has nine percent body fat, continued to explain: "I'm in the best shape of my life. But it's not a vanity or egotistical thing. I'm in risk management and it's an investment in my health."
As well as the treatment in Mexico, he also has a very specific diet consisting of cold water fish and vegetable smoothies, as well as taking 125 vitamin tablets every day.
On top of that he practices meditation for 70 minutes three times a week in a hyperbaric chamber where he breathes in almost pure oxygen.
The self-confessed workaholic also says he survives on four hours sleep and the bed is designed for him and his wife Kellie to be at different temperatures.
His is set to an 'optimal sleeping temperature' of 68°F (20°C) while Kellie's side is set to 72°F (25°C).
Rastegar concluded: "I'm following this lifestyle to be a better husband, father and investor. I'm not looking for any kind of health award.
"The day I am no longer able to contribute and add value to my family, customers and humanity - whatever you want to call it - is the day I'm ready to go."
All I do is look both ways when I cross the road so fair play to him, I suppose.
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