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A 45-year-old tech tycoon who spends upwards of $2 million per year to bio-hack his body into aging backwards said he eats dinner at 11 a.m. to achieve an 18-year-old physique.

Bryan Johnson — who also has said he uses a machine to count his nighttime erections and has taken steps to make his rectum perform like a teenager’s — made his fortune in his 30s when he sold his payment processing company Braintree Payment Solutions to EBay for $800 million in cash.

In addition to swapping blood with his teenage son and taking more than 100 supplements a day, Johnson said his daily routine also includes consuming all of his food for the day before the clock strikes noon.

Johnson responded on Twitter to a commenter who quizzed him over his eating schedule.

“Is this a typo? Can you clarify?” tweeted Twitter user Martina Markota, who wondered whether the tech mogul actually ate his dinner before noon.

“My final meal of the day is at 11 am. I eat between ~6-11am,” Johnson tweeted.

Johnson is a practitioner of “time-restricted eating,” also referred to as “intermittent fasting,” which means cramming meals into a window so as to allow for longer periods of digestive rest.

The practice, which has been made popular in recent years by celebrities, has been touted for its purported health benefits, including increased energy, weight loss, and greater mental focus and cognition.

Johnson became a social media sensation earlier this year after a report detailing his extreme daily ritual which is aimed at getting all of his major organs — including his brain, liver, kidneys, teeth, skin, hair, penis and rectum functioning as they were in his late teens.

In May, it was learned that Johnson enlisted his 17-year-old son, Talmage, to be his personal “blood boy” by providing transfusions in an hours-long process whereby plasma is fed directly into the dad’s veins.

Using plasma as an anti-aging technique caught the attention of wellness junkies when scientists literally stitched young and old mice together so they shared a circulatory system, Bloomberg reported.

The older rodents showed improvements in their cognitive function, metabolism and bone structure, while the younger subjects showed that frequent blood donation could have positive effects.

However, there is little human-based data, leaving many researchers to view plasma-swapping longevity techniques as inconclusive, according to Bloomberg.

Known as Project Blueprint, Johnson adheres to a strict vegan diet totaling 1,977 calories per day, a one-hour-long exercise regimen, high-intensity exercises three times a week, and going to bed at the same time each night.

What I do may sound extreme, but Im trying to prove that self-harm and decay are not inevitable, Johnson told Bloomberg News.

Johnson wakes every morning at 5 am, takes two dozen supplements, works out for an hour, drinks green juice laced with creatine and collagen peptides, and brushes and flosses his teeth while rinsing with tea-tree oil and antioxidant gel.

Before bedtime, Johnson wears glasses that block blue light for two hours. He also constantly monitors his vital signs and undergoes monthly medical procedures to maintain his results, including ultrasounds, MRIs, colonoscopies and blood tests.

While sleeping, Johnson is hooked up to a machine that counts the number of nighttime erections. He also takes daily measurements of his weight, body mass index, body fat, blood glucose levels and heart-rate variations.

Johnson’s part of a trend that has become fashionable among Silicon Valley tech executives who have vowed to crack the code on aging and longevity.

Peter Thiel, the PayPal co-founder, has invested millions of dollars into a nonprofit that seeks to make “90 the new 50 by 2030.”

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Technology

Uber opens ‘interest list’ for Waymo robotaxi rides in Austin

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Uber opens 'interest list' for Waymo robotaxi rides in Austin

Dara Khosrowshahi, CEO of Uber, speaking on CNBC’s Squawk Box outside the World Economic Forum in Davos, Switzerland on Jan. 22, 2025.

Gerry Miller | CNBC

Ride-hailing and food delivery app Uber is opening its “interest list” to users in Austin, Texas, who want to be first in line for Waymo robotaxis there.

The company said in a statement that users will “be able to travel across 37 square miles of Austin — from Hyde Park, to Downtown, to Montopolis” — when the Uber-Waymo service launches soon.

The so-called “interest list” allows users to receive Uber updates and bolsters their odds of being matched with a Waymo autonomous vehicle upon launch.

The vehicles that will be part of the Austin service are Jaguar iPace electric models equipped with Waymo’s driverless systems and labeled with both Waymo and Uber branding.

The Waymo rides in Austin will only be available through the Uber app, unlike in San Francisco and Los Angeles, where riders hail them through the Waymo One app.

In the face of investor pressure to step up its autonomous vehicle strategy after Tesla promised it would soon start producing robotaxis, Uber last year said it had begun testing a ride-hailing app with some of its employees.

While Tesla does not make vehicles that are safe to use without a human driver at the wheel, ready to steer or brake at all times, Elon Musk’s automaker in January said it will “begin launching” a driverless ride-hailing business “later this year” starting in Austin.

According to the Texas Department of Transportation, testing and operating a commercial robotaxi service in the state does not require the same types of special licenses and permits that other states require.

“Texas law allows for AV testing and operations on Texas roadways as long as they meet the same safety and insurance requirements as every other vehicle on the road,” a spokesperson for the department told CNBC by e-mail.

Uber CEO Dara Khosrowshahi is expected to discuss the impact of automated driving systems — or self-driving cars — on the company’s overall business and strategy on a fourth-quarter earnings call on Wednesday.

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Politics

Bybit fined $1M by India’s financial regulator over compliance violations

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Bybit fined M by India’s financial regulator over compliance violations

India’s financial regulator has fined Bybit $1 million for failing to register under the Prevention of Money Laundering Act, leaving its compliance status unclear.

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Science

Scientists Control Kelvin Waves in Superfluid Helium for First Time

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Scientists Control Kelvin Waves in Superfluid Helium for First Time

For the first time, researchers have successfully controlled and observed Kelvin waves in superfluid helium-4, marking a significant step in understanding energy dissipation in quantum systems. The study has provided a controlled method to excite these helical waves, which had previously only been observed in unpredictable conditions. The research opens new possibilities for studying quantised vortices and their role in energy transfer at the quantum level.

Controlled Excitation of Kelvin Waves

According to the study published in Nature Physics, also available on arXiv, Kelvin waves—first described by Lord Kelvin in 1880—are helical disturbances that travel along vortex lines in superfluid systems. These waves play a crucial role in energy dissipation within quantum fluids but have remained difficult to study due to the challenges of controlled excitation.

Associate Professor Yosuke Minowa from Kyoto University, the lead author of the study, told Phys.org that the breakthrough occurred unexpectedly. An electric field was applied to a nanoparticle decorating a quantised vortex with the intention of moving the structure. Instead, the vortex core exhibited a distinct wavy motion, leading researchers to shift their focus toward controlled Kelvin wave excitation.

Superfluid Properties and Quantum Vortex Behaviour

Superfluid helium-4, which exhibits quantum effects at macroscopic scales when cooled below 2.17 Kelvin, has no viscosity, allowing it to flow without friction. This unique state prevents energy from dissipating as heat, leading to the formation of Kelvin waves when disturbances occur in the vortex lines of the fluid. The research team demonstrated that these waves, rather than traditional fluid turbulence, provide an essential mechanism for energy transfer in superfluid systems.

Nanoparticles Used for Wave Visualisation

To track the motion of Kelvin waves, the researchers introduced silicon nanoparticles into superfluid helium-4 at 1.4 Kelvin by directing a laser at a silicon wafer submerged in the fluid. Some nanoparticles became trapped within vortex cores, making them visible under controlled conditions. A time-varying electric field was then applied, forcing oscillations in the trapped particles and generating a helical wave along the vortex.

Experiments were conducted across different excitation frequencies ranging from 0.8 to 3.0 Hertz. A dual-camera system allowed for three-dimensional reconstruction of the wave’s motion, confirming its helical nature.

Experimental Confirmation and Future Research

Prof. Minowa explained to Phys.org that proving the observed phenomenon was indeed a Kelvin wave required an in-depth analysis of dispersion relations, phase velocity, and three-dimensional dynamics. By reconstructing the vortex’s motion in 3D, the researchers provided direct evidence of the wave’s handedness, confirming its left-handed helical structure—something never experimentally demonstrated before.

To validate their findings, the team developed a vortex filament model, which simulated Kelvin wave excitation under similar conditions. These simulations confirmed that forced oscillations of a charged nanoparticle generated helical waves in both directions, aligning with experimental results.

The study introduces a new approach for studying Kelvin waves in superfluid helium, offering insights into the mechanics of quantised vortices. Future research may explore the nonlinearity and decay processes of Kelvin waves, potentially revealing further details about quantum fluid dynamics.

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