A wellness advocate has stunned thousands after revealing that, at 40, her biological age has tested at just 26.
But Kashlee Garcia, who regularly shares her longevity routines online, said turning 40 was a wake‑up call.
Not only did she want to feel vibrant in the ‘second half’ of her life, but she and her husband had also decided to start trying for children – prompting her to test everything she possibly could to ensure her body was in peak condition.
When the results came back showing her biological age was 14 years younger than her chronological age, Kashlee was in shock.
‘I felt like I earned some bonus years in the prime of my life,’ she told the Daily Mail, adding that a year of consistent healthy habits before testing made the result feel ‘gratifying and encouraging’.
Kashlee said she uses two main methods to track her progress: physiological blood biomarker testing and molecular DNA methylation (epigenetic) testing.
The first looks at blood markers and physical health data, while the second analyses DNA methylation patterns, which are associated with ageing at a cellular level.
She retests every six months and says both methods consistently return similar results.
American‑born wellness advocate Kashlee Garcia (pictured) has stunned followers after revealing that, at 40, her biological age has tested at just 26
Now she has her sights set on lowering it even further, revealing she plans to experiment with mitochondrial peptides and deeper hormonal optimisation this year.
While Kashlee follows what she calls a well‑rounded anti‑ageing protocol, she said three pillars move the needle most: sleep, diet and exercise.
And when it comes to sleep, she doesn’t mess around.
She follows a strict ‘3‑2‑1 rule’: no food three hours before bed, no drinks two hours before bed, and no screens or bright lights one hour before bed.
Her bedroom is kept freezing cold and pitch black with blackout blinds, and she relies on red light, an eye mask, magnesium and a strict bedtime to protect her eight hours.
‘The biggest reason my biological age is 26 is because of my sleep protocol. Boring but true.’
A high-protein, minimally processed diet
Her daily menu is intentionally repetitive, consisting of a breakfast of four eggs, two natural turkey sausages, blueberries, rocket and a small piece of cheese.
Kashlee said she uses two main methods to track her progress: physiological blood biomarker testing and molecular DNA methylation (epigenetic) testing
Now she has her sights set on lowering it even further, revealing she plans to experiment with mitochondrial peptides and deeper hormonal optimisation this year
On busier days, she adds sourdough with grass‑fed butter, and her everyday coffee is fortified with colostrum, creatine and other supplements.
Lunch is simply leftovers from the previous night’s dinner – she doubles recipes to stay consistent.
Dinner follows a formula of 50 per cent protein, 25 per cent carbohydrates and 25 per cent vegetables.
A typical meal might include turkey mince with taco seasoning, air-fried sweet potato cubes and a mix of broccoli and capsicum.
She said she aims for 120 grams of protein per day, prioritises fibre-rich whole foods to keep blood sugar stable, and limits what she calls ‘super inflammatory seed oils’, sugary drinks, white bread and deep-fried foods by up to 90 per cent.
That said, she insists on sustainability. Nothing is banned entirely, but ultra‑processed foods are mostly out.
Kashlee also makes room for dessert every night, often dark chocolate-dipped fruit, a homemade protein brownie or a mini Greek yoghurt parfait.
Kashlee aims for 120 grams of protein per day and prioritises fibre-rich whole foods
Strict daily movement
Kashlee trains five days a week for about an hour at a time, focusing on strength training, Zone 2 cardio and walking after meals.
Three days combine 40 minutes of weightlifting with 30 minutes of cardio – such as a brisk incline walk – while two days focus solely on strength training.
She also aims for 7,000 to 10,000 steps a day and swears by 10-to-15-minute walks after meals to improve insulin sensitivity, digestion and reduce oxidative stress.
‘Women need lean muscle in our 30s and 40s,’ she said, adding that lifting heavy weights has changed the way her body stores fat and handles glucose.
She also trains five days a week for around an hour at a time, focusing on strength training, zone two cardio and walking after meals
Supplements and stress reduction
Kashlee admits her supplement stack is extensive, taking about 15 daily, but names magnesium, NAD+ and creatine as her ‘top performers’.
Magnesium is non-negotiable for sleep, while she credits NAD+ with supporting cellular renewal, and creatine for its muscle and cognitive benefits.
Beyond food and fitness, she focuses heavily on reducing overall toxic load.
She has swapped plastic containers for glass, ditched non-stick cookware and uses wooden utensils in the kitchen.
She has transitioned to what she calls a ‘low-tox’ beauty and cleaning routine to reduce exposure to endocrine disruptors and BPA (bisphenol A), a chemical commonly found in plastics.
Her supplement stack is extensive, taking about 15 daily, but names magnesium, NAD+ and creatine as her ‘top performers’
She has also swapped plastic containers for glass, ditched non-stick cookware, uses wooden utensils and has transitioned to what she calls a ‘low-tox’ beauty and cleaning routine
She has also cut back dramatically on flying, after previously taking more than 100 flights a year, saying the constant travel left her immune system depleted.
Perhaps most unexpectedly, she credits her healthy relationship for part of her glow.
‘Feeling safe in love means better nervous system regulation,’ she said, explaining that reduced stress and cortisol levels translate to better sleep and slower ageing.
She also practises daily gratitude and stoicism, believing optimism helps lower chronic inflammation, which is one of the major drivers of ageing.
Longevity‑focused skincare
Kashlee said she sees topical care as an extension of internal health.
She has done 10 minutes of full‑body red light therapy every morning for three years, and says it has improved fine lines, texture and pigmentation.
Her skincare routine is minimal but consistent, using just one serum, a peptide moisturiser, SPF during the day and retinal at night.
She hasn’t yet tried lasers or chemical peels, but isn’t ruling them out if and when the time comes that she feels she needs them.
She has done 10 minutes of full‑body red light therapy every morning for three years, and says it has improved fine lines, texture and pigmentation
However, when it comes to muscle-relaxing injections, Kashlee admits to being a big fan since her mid-30s.
‘I’m not here to paint a false picture. I get the maximum amount [of injections] every three to four months, since 35. I love it and think it makes a massive difference.’
The same goes for facial filler. She has small amounts in key areas, like her nasolabial folds, but insists her last appointment was more than four years ago.
Her advice for women in their late 30s and 40s
For those feeling overwhelmed by the anti-ageing space, she urges them to start simple.
Her top three beginner habits focus on the basics: ‘Romanticise a calming bedtime routine to secure eight hours of sleep, ditch packaged food in favour of protein-rich whole foods, and lift something heavy at least three times a week.’
‘Even if it’s just 30 minutes, three times a week, start lifting weights and everything from your sleep, metabolism and energy will be better.’
For those feeling overwhelmed by the anti-ageing space, she urges them to start simple
At 40, Kashlee said she feels as though she has ‘earned’ extra years.
Whether her exact protocol is realistic for the average woman juggling work, kids and a social life is up for debate, but her core message is simple: consistency compounds.
And according to her test results, it’s working.
Disclaimer: This article is for informational purposes only and is not intended as medical advice. Always consult a qualified healthcare professional before starting any new supplements, diet, exercise program or lifestyle changes.
New to DailyMail+? Here are our most-read stories from the past week
The wildly privileged life of eastern suburbs lawyer accused of stealing $15M to fund gambling addiction: LUCY MANLY goes inside the story rocking the legal world
The insider blame game about Jackie O’s manager is out of control. It ignores the other reason her $100m client may have walked away: AMANDA GOFF
Celebrity dentist’s most shameful betrayal of his wife revealed – after his secret life of filth, drugs and sex parties ended in unthinkable horror: ‘It would break most people’
MAFS INSIDER: Chaos at the retreat as obscene first-night speech shatters Steven and Rachel… Plus, why producers forced Bec and Danny to leave early
Mormon ex-wife of ‘alpha’ MAFS groom Tyson Gordon breaks her silence on ‘unhealthy’ marriage – as she reveals fears for his Twitch streamer sister
MAFS INSIDER: Luke and Mel’s unseen REAL break-up days before staged TV split – and how Bec and Danny set it off… Plus, end of the road for Gia and Scott after explicit phone discovery
I was tortured by psoriasis for 20 years. Then I finally found a simple cure that really works – and it saw me lose 3 stone too WITHOUT medication. Everyone plagued by itchy red skin patches should make these easy lifestyle tweaks
Unmasked: Rich Lister quietly dating femme fatale socialite… Plus, guest booted from SailGP cruise over fling – and Roxy’s estranged dad stricken with cancer: THE GROUP CHAT
‘Everyone asks why my mouth is like this’: MAFS Bec reveals the real story behind her facial difference – and the celebrity surgeon uncle who transformed her life
Jobs bloodbath at Kyle and Jackie O: Staff in tears as insiders say only ONE team member may survive – as their colleagues celebrate
