If you regularly do these 8 things, your biological age is probably younger than you think

by Lachlan Brown | May 4, 2026, 5:19 pm

A lot of people assume aging is a steady downward slide—your energy dips, metabolism slows, aches appear, and life becomes a cautious balancing act. But biological aging doesn’t work like that.

Your chronological age is just the number of years you’ve been alive.
Your biological age is how young or old your body actually is on the inside.

And science shows something remarkable: some people genuinely have the cardiovascular health, metabolic markers, cognitive function, and mobility of someone decades younger.

You’ve met these people before. They’re not necessarily gym addicts or green-smoothie enthusiasts. They’re not the loudest in the room. But they have a certain lightness, an energy, a kind of youthful resilience you can feel immediately.

If you’re still doing these eight things regularly, there’s a very good chance your biological age is much younger than your birth certificate suggests.

Let’s break them down.

1. You move your body every day (even in low-intensity ways)

Movement is the closest thing science has to a real anti-aging pill. And no—you don’t need heavy weightlifting or 10 km runs to get the benefits.

People who stay biologically young don’t exercise out of guilt or pressure. They simply move in ways that fit naturally into their life.

You might:

  • walk every morning or evening

  • stretch your body when you wake up

  • take the stairs without thinking

  • do light resistance exercises

  • go dancing or swimming

  • garden, clean, or play with the kids

  • cycle casually

  • take short active breaks throughout the day

These aren’t just habits—they’re metabolic signals. Daily movement boosts mitochondrial function (your cell’s energy factories), improves insulin sensitivity, reduces inflammation, and slows telomere shortening (a major marker of aging).

People whose bodies are “younger” biologically tend to enjoy movement. It doesn’t feel like a chore. It feels natural—almost necessary—to keep the engine running smoothly.

If you’re still active—even lightly—your cells know it.

2. You remain deeply curious about life

One of the most powerful signs of a youthful biological age isn’t physical—it’s psychological.

You stay curious.

You still:

  • ask questions

  • learn new skills

  • follow interesting rabbit holes

  • read things that challenge you

  • experiment with hobbies

  • stay mentally engaged with the world

  • adapt to new technology instead of resisting it

Curiosity keeps your brain flexible. And cognitive flexibility is one of the strongest indicators of a young neurological age.

When your brain actively grows new connections, learns new patterns, and engages with new information, it literally behaves younger. Neuroplasticity stays alive. Your mental processing stays sharp.

If you’re still approaching life like a student rather than a cynic, you’re aging far better than most people realize.

3. You maintain at least a small, meaningful social circle

Loneliness accelerates aging more than almost anything else. It spikes cortisol, shrinks parts of the brain responsible for memory, and weakens immune function.

But you don’t need a huge social network to stay biologically young—just a few meaningful connections.

If you still:

  • talk regularly with a close friend or sibling

  • have a partner you feel emotionally connected to

  • enjoy casual chats with neighbors or baristas

  • participate in a club, group, or community

  • show up for family gatherings

  • maintain friendships that feel energizing

…your social system is doing exactly what it needs to for healthy aging.

Humans are biologically wired for connection. Relationships regulate your nervous system. Social bonds stimulate oxytocin, which lowers stress, improves cardiovascular health, and helps preserve cognitive ability.

The key is quality, not quantity.

If you’re still engaged socially, even modestly, that alone can shave years off your biological age.

4. You laugh—really laugh—on a regular basis

Lachlan Brown

Lachlan Brown is an entrepreneur and co-founder of Brown Brothers Media, a digital publishing network reaching tens of millions of readers monthly. He holds a Graduate Diploma of Psychological Studies from Deakin University, though his real education came afterward: a warehouse job shifting TVs, a stretch of anxiety in his mid-twenties, and the slow discovery that studying the mind is not the same as learning how to live well. He started experimenting with Buddhist principles during breaks at the warehouse and eventually began writing about what he was learning. That writing became Hack Spirit, a widely read personal development site, and his book Hidden Secrets of Buddhism became a bestseller. His work breaks down complex ideas into frameworks people can apply immediately, whether they are navigating a career change, a difficult relationship, or the gap between knowing what to do and actually doing it. Lachlan splits his time between Singapore and Saigon. He writes about high-performance routines, decision-making under pressure, digital innovation, and the intersection of Eastern philosophy with modern life. His perspective comes from having built things from scratch, failed at some of them, and learned that clarity comes from practice, not theory.