Gray hairs and knee-cracks used to be the soundtrack of turning forty.
Yet somehow your college buddy still gets carded at the brew-pub.
What’s going on?
As I’ve watched friends sail past their thirties looking suspiciously fresh, I’ve noticed a pattern of micro-behaviours—call them millennial habits—that keep the biological clock running slow.
Below are ten worth stealing.
1. Prioritise sleep
Ever bragged about surviving on four hours?
Millennials treat that flex like dial-up internet—outdated and painfully slow.
They’ve seen the research and built rituals around it: phone on airplane mode by 10 p.m., lavender mist, blackout curtains.
As author Arianna Huffington warns, “Our cultural dismissal of sleep as time wasted compromises our health and our decision-making.”
I used to pull midnight writing sessions, but trading them for an extra hour of shut-eye shaved the dark circles faster than any eye cream.
Eight hours is the new startup hustle—steal it.
2. Protect skin
Remember when SPF was only for beach days?
Millennials turned it into a daily non-negotiable—rain, shine, or screen glare.
Broad-spectrum sunscreen, antioxidant serums, and mineral moisturisers form their holy trinity.
During a photo assignment in Lisbon, I skipped sunscreen “just this once.” I still have the freckle souvenir.
Lesson learned: UV never takes a holiday, so neither should your SPF.
3. Move intentionally
Gym memberships rise and fall, but step counts stay loyal.
Millennials bake movement into life—walking meetings, standing desks, yoga flows between Zoom calls. It’s exercise by stealth.
Last month I swapped a 15-minute drive for a bike ride to my local café.
Same caffeine hit, 3 000 bonus steps, and a grin that stuck all day.
4. Eat plant-forward
You don’t have to memorise quinoa’s amino-acid profile to enjoy plant-based eating.
Millennials discovered that piling plants at the centre of the plate keeps inflammation down and energy up.
When I ditched the lunchtime deli meats for chickpea salad, my post-meal slump vanished.
Bonus: your grocery bill tilts in favour of beans over bacon.
5. Hydrate wisely
Sugary sodas are so 2005. The under-40 crowd guzzles water, herbal infusions, and the occasional kombucha.
They carry reusable bottles like fashion accessories.
A simple rule I picked up in Bali: if my lips feel dry, I’m already dehydrated.
Two litres before dinner keeps everything—skin, joints, mood—plump.
6. Nurture friendships
As Harvard psychiatrist Robert Waldinger notes, good relationships keep us happier and healthier.
Millennials schedule friend dates with the same seriousness as dentist appointments.
From gaming nights to group chats that never sleep, they keep connection on speed dial.
I’ve mentioned this before but joining a weekly trivia team was the cheapest therapy I’ve tried—laughter really does crunch cortisol.
7. Embrace lifelong learning
Podcasts on 1.2× speed, newsletters on behavioural science, online courses after dinner—millennials treat curiosity like cardio for the brain.
Fresh knowledge sparks neuroplasticity, which scientists link to youthful cognition.
I recently finished a short course on colour theory.
Now my photography pops, and my brain feels like it’s had a double espresso.
8. Manage stress proactively
Meditation apps, breath-work reels, and therapy memes have normalised mental-health upkeep.
Millennials don’t wait for burnout; they build stress release into daily rhythms—five-minute box-breathing between tasks, weekend forest baths, journaling before sleep.
On deadline weeks I follow a “two-minute exhale” rule: anytime anxiety spikes, I pause and double my exhale length.
Heart rate drops, clarity returns.
9. Curate digital consumption
Scrolling till 2 a.m. ages you faster than gravity.
Savvy millennials use screen-time limits, grayscale modes, and “do not disturb” windows to stop the doom loop.
Their feeds become curated inspiration boards rather than cortisol triggers.
After unfollowing 50 accounts that sparked comparison, I noticed fewer frown lines (and fewer impulse buys).
10. Celebrate play
From adult colouring books to pickup basketball, millennials revived play as legitimate self-care. Fun floods the body with dopamine, lowering stress hormones that accelerate ageing.
By adopting habits such as regular exercise, a balanced diet, and stress management, we can optimise our chances of living a longer and healthier life.
My current hobby—film-camera street photography—forces me outdoors, sparks creativity, and makes time blur in the best way.
The takeaway
Looking 28 at 40 isn’t sorcery; it’s compound interest on modest habits.
Pick one millennial move—maybe SPF, maybe sleep—and give it a month. Your joints, skin, and spirit will file a thank-you note.
Then stack the next habit.
In a year, you might be the friend everyone accuses of sipping from the fountain of youth.
