One conference speaker proposed a plan to inject bone marrow in your 40s, a new kidney in your 50s, a new heart in your 60s, and a full body transplant by 90 — leaving you biologically 18.
Rory Sutherland's EV showed 16% battery remaining (58 miles of range) causing panic, while his wife's smaller-battery Mini at 56% (also ~56 miles) felt completely fine — same physical range, radically different psychology.
The suprachiasmatic nucleus integrates photon exposure from the previous 2–3 days to set cortisol and melatonin timing — missing one morning is not catastrophic if you compensate the next day.
Unlike almost all other central nervous system neurons, olfactory neurons continuously regenerate throughout the lifespan and can be trained through deliberate, focused sniffing of distinct odors.
Only about 20% of people are genetically hardwired 'early birds'; the majority prefer waking between 6–8 AM and sleeping between 10 PM and midnight.
Point Nemo in the Pacific Ocean — the farthest place from land on Earth — is closer to astronauts aboard the International Space Station than to any human on land.
Hands-on fathers lose approximately 1% of gray matter volume across the transition to fatherhood, mostly in the cortex — tied directly to parenting time and investment.
New mothers lose about 2.5% of gray matter volume, affecting both the cortex and subcortex including the amygdala and reward circuitry — a larger and more widespread change than in dads.
UK Biobank data shows that having more children (up to about 3) is associated with better cognitive functioning and machine-learning-assessed younger brain age in middle and older age.
The neuroprotective benefit of parenthood on brain age tops off at around 3 children, after which there is no additional cognitive benefit from having more.
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