For years, Bryan Johnson has made the rest of us feel vaguely guilty for enjoying the odd glass of sauvignon blanc. The 48-year-old tech entrepreneur has become the poster child for the modern longevity movement, meticulously documenting every calorie, blood test, biological marker (and even colonoscopies) in his attempt to reverse the aging process.
His daily routine, all documented and promoted on his social media and through his ‘project’ Blueprint, has involved…

