BRYAN JOHNSON

His Blueprint project could be the script for a movie, a mix of “Benjamin Button” and “American Psycho”: Every year the tech entrepreneur invests $2 million to get younger, and subjects himself to a hellish daily routine involving 100 different things. As well as eating a vegan diet and various other measures, Bryan Johnson takes a multitude of pills and substances: lycopene for the arteries, metformin for the gut, lithium for the brain. Plus melatonin, hyaluronic acid, amino acids, testosterone plasters. A team of 30 doctors monitors him daily at his house in Santa Monica. The 45-year-old, who sold his online payment system Braintree to PayPal for $800 million, claims to have reversed his epigenetic age by 5.1 years in seven months. “No matter how eccentric people perceive me to be, demonstrating that age can be arrested would change everything,” he says on YouTube.