Astronauts in microgravity can lose around 1–1.5% of their bone density per month. 10x faster bone loss than on Earth.

how did you sleep last night?

If you recently got less than four hours of sleep, I have some news for you.

Protocol for optimal sperm health:

+ Sleep: 8+ hours nightly
+ Reduce inflammation: omega-3s, NAC, exercise
+ Avoid testicular heat: no saunas (or sauna with an testicular ice pack), tight underwear, or laptops
+ Eliminate toxins: alcohol, cigarettes, plastics
+ Train hard:…

Semen quality isn’t just about reproduction. It’s one of the clearest biomarkers of systemic aging: tightly linked to hormone health, inflammation, mitochondrial function, and metabolic fitness.

Across five lab tests in 3 months, my total motile sperm count (TMC) averaged 165…

While global sperm health is plummeting, my sperm count is over 4× the average. At age 47.

Global data from 1973 to 2018:
+ sperm concentration declined by 51%
+ total sperm count declined 55%

My sperm concentration (143 million) and count (380 million) both exceed 1973 levels…

Lift weights and get jacked.
Sleep well and stabilize your mood.
Eat well and feel energized.

8/ The Rejuvenation Olympics enables anyone to compete to determine who can achieve the lowest speed of aging. I am currently #1 in the world out of 6,000 participants.

To qualify, you need to complete three tests within two years. Your average is then used for the leaderboard.…

6/ Here are more details on the history and generations of pan-tissue epigenetic clocks, and how PACE came to be.

PACE is a 3rd generation pan-tissue clock.

Pan-tissue epigenetic clocks aim to provide a comprehensive assessment of an individual’s biological age or the rate at…

7/ As far as I know, I've used this speed of aging measurement more than anyone one the world. In the last 12 months alone I've measured myself 22 times.

My team and I choose this frequency of measurement because we find the data uniquely insightful to measure the effect of…