8 Ways to Build Energy Where It Is Made
8 TO ELEVATE. Written by the Editorial Team.
What if the most reliable route to steadier energy runs through the cell? The editorial team explores eight rituals, each grounded in research on mitochondria, that women 40+ can begin this week.
Mitochondria respond to how we live. Sleep, movement, food, light and recovery all shape how many mitochondria a cell holds and how well they work, and the research behind that statement has grown quickly. Studies on women 40+ specifically remain fewer than we would like, so each ritual below says what the evidence supports and where it is still early.
The eight practices draw on findings summarised in the Calmfidence Lifestyle Medicine Research Hub, with links to the original sources. They suit most healthy adults, and anyone with a medical condition, or who is new to vigorous exercise, should check with a GP first.
Energy that holds on a Monday morning is built in the ordinary hours of the week before it.
1. Protect a steady sleep pattern
The principle: sleep and mitochondria are closely linked. In a twin study published in Sleep, the twin who habitually slept less had lower mitochondrial DNA copy number, and in 238 middle-aged adults poor sleep quality, especially a long time taken to fall asleep, was independently associated with the same marker. Matthew Walker's Why We Sleep remains the most widely read introduction to the wider science of sleep.
The practice: choose a fixed wake time and hold it, including at weekends. A controlled study found that sleeping in on weekends did not undo the metabolic effects of short weeknight sleep, so a steady rhythm is the dependable approach. Allow a wind-down of thirty minutes before bed.
2. Walk, cycle or swim at a conversational pace
The principle: endurance exercise is the best-studied trigger for making new mitochondria. A 2025 meta-analysis of randomised trials in healthy adults found that endurance exercise significantly increased PGC-1 alpha, a widely used marker of mitochondrial biogenesis, with a large average effect. The included trials varied considerably, and the study measured gene expression in muscle, which is an early signal of adaptation.
The practice: aim for the World Health Organization range of 150 to 300 minutes of moderate activity a week, spread across most days. A pace at which you can talk in full sentences counts. Ten minutes after each meal is a good way to begin.
3. Add short intervals once or twice a week
The principle: brief harder efforts appear to work as well as continuous exercise for this marker. In the same meta-analysis, interval and continuous endurance training both produced large effects, with no significant difference between them. A 2026 study in Experimental Physiology of active postmenopausal women found that six weeks of supervised interval training improved fat oxidation, with lower perceived effort at the same intensity. The exercise physiologist Stacy Sims argues in Next Level that women in perimenopause and menopause benefit from short, hard efforts and strength work, and the emerging data fit that argument.
The practice: once a week, after a warm-up, alternate 30 seconds of brisk effort with 90 seconds of easy movement for six rounds. Build up gradually, and speak to your GP first if you have a heart condition, high blood pressure or a long break from exercise.
4. Eat a Mediterranean pattern
The principle: whole dietary patterns can reshape mitochondria. A 12-month programme of Mediterranean diet plus exercise in older adults with obesity changed mitochondrial structure and function, and the pattern of change differed according to each person's underlying metabolic health. The study population was specific, and the direction fits a large body of nutrition research. Lisa Mosconi's The XX Brain makes the case for a Mediterranean-style pattern for women's brain health.
The practice: build meals around vegetables, legumes, whole grains, nuts, fish twice a week and olive oil. Small regular shifts accumulate.
5. Choose extra virgin olive oil
The principle: a 2025 review identified three compounds in extra virgin olive oil, hydroxytyrosol, oleuropein and oleocanthal, that activate cellular pathways supporting mitochondrial repair and energy production. Much of the mechanistic work comes from laboratory and animal studies, and it adds a specific reason to choose this oil.
The practice: use extra virgin olive oil as your main dressing and finishing oil, keep it in a dark bottle away from heat, and choose bottles with a harvest date.
6. Dim the evening light and warm the body
The principle: melatonin is made and used inside mitochondria, and light in the evening suppresses it. In 116 adults, ordinary room light before bed suppressed melatonin and shortened its duration by around 90 minutes compared with dim light. Reading on a light-emitting tablet for four hours before bed delayed melatonin onset by more than an hour in a controlled inpatient study. A meta-analysis found that a warm bath or shower one to two hours before bed shortened the time to fall asleep by around nine minutes.
The practice: from two hours before bed, switch to lamps and warm light, put screens down or dim them, and take a warm bath or shower at a comfortable temperature.
7. Close the working day on purpose
The principle: recovery from work stress has four ingredients, and psychological detachment has the strongest link to lower fatigue. A pooled analysis of 54 samples found this, and it also found that control over leisure time had the strongest link to vigour. Late-night work messages carry a cost: in two field studies including senior managers, smartphone work after 9 pm was linked to poorer sleep and more depletion the next day. Emily and Amelia Nagoski's Burnout adds that the body also needs a physical release, such as movement, breath or a good cry, to complete a stress cycle.
The practice: set a closing time for work messages, write tomorrow's three priorities, and take a ten-minute walk to mark the change of state.
8. Protect your closest connections
The principle: Martin Picard and Carmen Sandi's 2021 review, The social nature of mitochondria, examines how social experience and mitochondrial function may influence each other. This is an emerging area with a developing evidence base, and it sits well alongside long-standing research linking supportive relationships with better health. In 367 women followed through midlife, a consistent partner over six to eight years was associated with better objectively measured sleep continuity.
The practice: schedule one unhurried conversation each week with someone who leaves you feeling steadier, and protect it in the diary as you would a meeting.
Choosing where to begin
Start with the ritual that feels easiest, and let it settle for two weeks. Sleep rhythm and an evening wind-down tend to make the others easier, and walking is a gentle next step. Interval training, dietary shifts and deeper connection can follow as energy allows.
These practices work best when they express the steadiness of Core Self. Calm Power, the steady strength that grows from Core Self, is built by the same small choices, repeated.
Ready to understand your current recovery needs more precisely?
What's next
FAQ
Can lifestyle changes really increase mitochondria?
Exercise has the strongest evidence, and a 2025 meta-analysis found that endurance training raised a key marker of mitochondrial biogenesis in healthy adults. Sleep, eating pattern and recovery show links to mitochondrial markers in observational and early trial data.
Practical step: begin with regular walking, since it is the most accessible practice with the strongest evidence.
Is intermittent or periodic fasting good for mitochondria?
One small study of 51 men and women found that five days of supervised periodic fasting increased mitochondrial DNA and two longevity-linked genes in blood. The result is early, involved medical supervision and used blood markers. Fasting does not suit everyone, including people who are pregnant, underweight, taking diabetes medication or with a history of disordered eating.
Practical step: speak to your GP before any extended fast, and let regular meals and good sleep come first.
Which ritual should I begin with?
Sleep rhythm, because it supports every other practice and costs nothing. A fixed wake time is a simple starting point.
Practical step: set a wake time you can keep for two weeks, including on weekends.
How do I keep the benefits at home?
Mitochondrial adaptations respond to repeated signals over weeks and months. Anchoring a practice to an existing routine, such as a walk after lunch, makes it easier to sustain.
Practical step: attach one new practice to something you already do every day.
Should I take a supplement for mitochondria?
Supplement evidence varies widely. A 2026 narrative review of four longevity compounds, urolithin A, spermidine, fisetin and berberine, found that they act on different cellular processes and are better read as complementary than as interchangeable, and that clinical evidence is strongest for berberine and thinnest for fisetin. Food, movement and sleep have the broadest support.
Practical step: discuss any supplement with your GP or pharmacist, particularly if you take regular medication.
Who should take medical advice before starting?
Anyone with a heart condition, high blood pressure, diabetes, pregnancy, a history of disordered eating or persistent unexplained fatigue should speak to a GP before changing exercise or eating patterns. This article offers education and does not replace medical advice.
Practical step: book a check-up if your tiredness has lasted more than a few weeks.
Curious to explore more?
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