Multimillionaire Bryan Johnson is on a mission to achieve eternal youth and he's got a daily ritual that he swears by.

The 47-year-old has been on a two-year quest to find the secret to a longer life. And now he's incorporated a special drink into his morning routine that he believes will help him live longer, reports .

Dubbed "the green giant", the tech mogul takes this concoction along with a staggering 54 pills every morning after getting up at 4.30am. His day kicks off with an intense regimen that includes light therapy and monitoring his heart rate variability (HRV).

In the documentary 'Don't Die: The Man Who Wants to Live Forever', Bryan spills the beans on his extensive daily routine aimed at keeping his body in peak condition. He says: "It's probably 100 different things I do at any given day that the body has asked for to be in its ideal state. That begins with the morning, I wake up and I turn a specific light on in my bathroom that gives me sun-like exposure.

"I take three pills, I do my body temperature with an inner ear measurement, go downstairs and start HRV therapy, so I put a little electrode in my ear, and it stimulates my autonomic immune system, trying to make my body more parasympathetic, more chill. I take 54 pills with a concoction I call the green giant, I put a cap on my head for hair growth that has 312 laser diodes.

"Then I workout for an hour, come in, eat a few pounds of vegetables, I do some high-frequency electromagnetic stimulation on my abdomen, I do 12 minutes of near and red-light therapy to accelerate healing, I do audiotherapy for my hearing, regeneration.

"I have my last meals to eat before 11am, 34 more meals to take. And there's protocols to follow throughout the day, and then my night-time routine."

Bryan revealed his green giant drink is a crucial part of his Blueprint Project in his quest for eternal youth. The concoction, he details, features plenty of H2O, chlorella, an amino acid complex, a dash of creatine, heaps of collagen, a healthy dose of cocoa flavanols, capped off with a sprinkle of ceylon cinnamon.

During an video last year, DJ Steve Aoki gave the green potion a go alongside Bryan and, quite astonished, admitted: "Wow, it's really good. This is the best drink I've ever had, usually, things that taste good are bad for you."

Even though Bryan, said to drop around $2 million (around £1.6m) annually on his age-defying mission, isn't exactly your traditional doc, Alex Zhavoronkov, PhD, from Forbes had this to say: "In my personal opinion, Bryan Johnson managed to generate more public awareness for longevity than anyone who came before him.

"Though it's a stark contrast to hardcore academic study or hands-on product demos, this kind of buzz could well leave a lasting mark as regular folk and fat cats alike cotton on to the idea they might have a real shot at extending their lives. True, Bryan and his medical team haven't peppered top-notch, peer-reviewed journals with ground-breaking longevity science, but they're not putting themselves out there as bona fide scholarly gurus, either."