Key takeaways
- Energy conservation is a set of everyday skills, taught by occupational therapists, for spending limited energy on the things you care about most3.
- The classic framework is the four Ps: prioritize, plan, pace and position4.
- In a trial of 169 adults with multiple sclerosis, a six-week energy conservation course led to less fatigue impact and more confidence8.
- Small, regular meals, steady fluids and foods rich in iron, B vitamins, magnesium and vitamin C feed your body’s energy chemistry713.
- European regulators recognize nine vitamins and minerals, including iron and vitamin B12, as contributing to the reduction of tiredness and fatigue14.
In a 2003 essay, Christine Miserandino described sitting in a diner with her best friend, who asked what living with lupus really felt like. Miserandino handed her friend a bunch of spoons. Each spoon stood for a share of the day’s energy, and she took one away for every activity that took effort1.
Her essay, “The Spoon Theory,” spread around the world. Today, many people with long-term health conditions use spoons to explain their days1. The idea caught on because it rings true. Some days, energy is a fixed budget.
Running low is common. Fatigue is the most common side effect of cancer treatment, and about 4 in 5 people getting chemotherapy or radiation report it2. Many other long-term conditions bring it too, from multiple sclerosis (MS) to lung disease and arthritis.
Occupational therapists, the professionals who help people do everyday tasks, have a name for making those spoons last: energy conservation. Here is their toolkit, followed by the food, fluids and nutrients that help your body make energy in the first place.
Energy conservation means spending energy on purpose
The Oncology Nursing Society defines energy conservation as the “deliberate and planned management of one’s personal energy resources”3. In plain words, you decide ahead of time where your energy goes. The day no longer decides for you.
It helps to think of energy like money in a checking account. Some tasks are big withdrawals, such as cleaning the bathroom, a long workday or a doctor’s visit across town. Others are small, like making tea. Rest, good food and fluids are the deposits.
The strategies are simple on paper. The Oncology Nursing Society lists planning, delegating, setting priorities, pacing, resting and scheduling high-energy activities for times of peak energy3. Its evidence review rates energy conservation and activity management as “likely to be effective” for fatigue linked to cancer3.
Pacing, the habit of breaking activity into smaller pieces with rest built in, is a big part of this toolkit. It has its own article in this library, so here it gets only a short visit.
The four Ps: prioritize, plan, pace and position
Most energy conservation programs boil down to a few easy-to-remember words. You will often see them as the four Ps. The American Lung Association teaches them to people with COPD4. It adds a fifth P, pursed-lip breathing, which slows your breath so you can move more air4. A Johns Hopkins handout on saving energy uses three of them: pace, plan and prioritize5.
Prioritize
Start by sorting your to-do list. Ask which tasks need doing today, which can wait and which someone else could do. The American Lung Association suggests deciding “what is important for you to do now and what can be done later”4. The American Cancer Society says to decide which things you most need or want to do, and to focus on those first6.
Leave room for joy on that list. MedlinePlus, from the National Library of Medicine, encourages time every day for things that give you energy or help you relax7. A phone call with a friend or ten minutes in the garden is a real priority.
Asking for help belongs here too. MedlinePlus suggests letting friends and family pitch in with grocery runs and cooking7. Every task you hand off saves a spoon for something you love.
Plan
Planning spreads the heavy jobs across the week. The American Lung Association advises against doing laundry, errands and a medical appointment all in one day4. Instead, schedule your hardest tasks for the hours when you usually feel strongest47.
Planning also means setting up before you start. The Johns Hopkins handout suggests collecting every item you need before you begin a task, so you skip extra trips5. It also suggests moving some tasks to a better time of day, such as showering in the evening instead of the morning5.
A simple energy diary makes planning easier. MedlinePlus suggests tracking when your tiredness starts, what time of day it hits and what seems to trigger it7. Share those notes with your provider, and use them to spot your best hours7.
Pace
Pacing means moving at a slow, steady speed and resting before you are worn out. The American Lung Association suggests taking breaks between activities and keeping “a slow and steady pace to avoid rushing”4. It also notes that recovery takes longer once you are overtired4.
Short rests work well. The American Cancer Society suggests keeping naps and rest breaks under 30 minutes6. The deeper skill of pacing, including how to build up activity over time, is covered in this library’s article on pacing.
Position
Your body position changes how much energy a task costs. Sitting down is one of the easiest swaps. The American Lung Association suggests sitting to fold laundry, chop vegetables, shave or do your hair4. Keeping the items you use most on the counter saves bending and reaching4.
How you lift matters as well. The Johns Hopkins handout advises bending with your knees rather than your waist5. It also suggests pushing or sliding objects instead of lifting them5. The American Lung Association adds a simple posture tip: sit and stand upright4.
Energy conservation classes have been tested in clinical trials
Researchers have tested these skills in formal trials, especially for people with MS and people going through cancer care.
The best-known MS study came from occupational therapy researchers led by Virgil Mathiowetz at the University of Minnesota. In a 2005 randomized controlled trial, 169 adults with MS took part in a six-week energy conservation course8. Compared with time spent without the course, people reported that fatigue interfered less with their physical and social lives8. They also scored higher on a vitality scale and felt more confident using energy-saving strategies8.
Cancer care has its own landmark study. In 2004, a team led by Andrea Barsevick tested energy conservation and activity management with 396 adults starting chemotherapy, radiation or both9. Each person had three phone sessions with an oncology nurse during the first five weeks of treatment9. A comparison group got phone sessions about nutrition instead9.
Over time, the energy conservation group had a larger drop in fatigue than the comparison group9. The authors described the benefit as modest but statistically significant9. They suggested pairing it with care for other symptoms that often travel with fatigue9.
Results vary from study to study, and researchers are still working out the best formats. A 2017 Dutch trial of 86 adults with MS found no clear difference in fatigue between one-on-one sessions and an information-only group10. An occupational therapist can help you find a format that fits you.
Getting started is easy. The American Lung Association encourages people to ask their healthcare provider about a referral4. That could be to an occupational therapist or a pulmonary rehabilitation program4. It is also worth asking whether your clinic offers an energy conservation class.
Energy-saving swaps at home and at work
The best swaps are small and repeatable. Each one saves a little energy. Together, they leave more for the parts of your day you enjoy. Here are practical ideas drawn from lung, cancer and occupational therapy guidance.
| Situation | Energy-draining habit | Energy-saving swap |
|---|---|---|
| Getting dressed | Standing and bending to pull on socks and shoes | Sit on the bed or a chair, and use a long-handled shoehorn |
| Bathing | Standing in a hot, steamy shower | Use a shower chair and a handheld showerhead, and keep steam low |
| Grooming | Standing at the mirror | Sit to do your hair, makeup or shaving |
| Cooking | Standing to chop and digging through cupboards | Sit to chop, and keep spices and tools on the counter |
| Laundry | Carrying heavy baskets up and down stairs | Roll laundry in a wheeled cart, and sit to fold |
| Cleaning | Cleaning the whole home in one day | Spread rooms across the week, mixing heavy and light jobs |
| Errands | Packing several errands and an appointment into one day | Spread them out, and lean on the store cart for support |
| Work tasks | Saving hard tasks for late in the day | Book demanding work for your best-energy hours |
| Desk setup | Getting up again and again for files and supplies | Keep the things you use most within easy reach |
| Lifting at work | Carrying boxes or bending at the waist | Push or slide loads, and bend at the knees |
If you need formal changes at work, such as a flexible schedule or a stool at your station, a separate article in this library covers workplace accommodations.
Steady meals and fluids keep your energy flowing
Energy conservation saves what you have. Food and fluids help you make more. The good news is that the eating habits that support steady energy are simple.
Smaller, more frequent meals are a good place to start. MedlinePlus suggests eating small meals throughout the day instead of 2 or 3 big meals7. If your appetite is low, it recommends foods high in calories and protein to keep your energy up7. Smoothies, vegetable juice, and olive or canola oil on pasta, bread or salads are easy ways to add healthy calories7.
Build each meal around a protein food. The American Cancer Society suggests a diet that includes protein, fruits, vegetables and whole grains6. Eggs, yogurt, beans, fish, chicken and nut butters are all easy choices that need little cooking.
Cooking itself can drain your energy, so plan for it. Cook a double batch on a good day and freeze half for a low day. Choose pre-cut vegetables, rotisserie chicken and canned beans when your energy is limited.
Fluids matter just as much. “Feeling tired” is one of the signs of dehydration that MedlinePlus lists, along with thirst, dry mouth and dark urine11. Some people lose their sense of thirst as they age, so they don’t drink enough11.
A simple routine makes this easier. The American Cancer Society suggests drinking fluids throughout the day6. For people with cancer-related fatigue, MedlinePlus suggests drinking water between meals and aiming for 6 to 8 glasses a day7. Keep a filled water bottle wherever you sit the most, so drinking takes no extra trips.
The nutrients your body uses to make energy
Every cell makes its own energy inside tiny power plants called mitochondria. To do that work, your cells rely on a team of vitamins and minerals. A 2020 review in the journal Nutrients describes how these helpers fit into the body’s energy chemistry13.
B vitamins help your body get energy from the food you eat, and they help form red blood cells12. Iron sits inside hemoglobin, the protein in red blood cells that carries oxygen13. Iron is also part of the proteins that move energy along inside mitochondria13. Magnesium pairs with the cell’s energy molecule, ATP, to form the active version the body uses13. Vitamin C helps the body make carnitine, which carries fats into mitochondria so they can be used for energy13.
European regulators have looked closely at this science. In 2012, the European Union adopted an official list of health claims that foods may carry14. The list rests on scientific reviews by the European Food Safety Authority (EFSA)14. Nine nutrients earned the claim that they contribute to the reduction of tiredness and fatigue14. Six are B vitamins: riboflavin (B2), niacin (B3), pantothenic acid (B5), vitamin B6, folate and vitamin B1214. The other three are vitamin C, iron and magnesium14.
A second claim covers normal energy-yielding metabolism, meaning the chemistry that turns food into energy14. Fifteen nutrients carry it, including thiamine (vitamin B1), biotin, calcium, copper, iodine, manganese and phosphorus14.
Iron has some of the most encouraging human research. In a 12-week randomized trial, 198 menstruating women aged 18 to 53 with unexplained fatigue took either iron or a placebo13. None were anemic, but all had low or borderline iron stores13. Fatigue scores fell 48% in the women taking 80 mg of iron a day, compared with 29% in the placebo group13.
How you eat iron matters too. Iron from plants is harder for the body to absorb than iron from meat15. Foods rich in vitamin C help your body take in more iron15. Try pairing beans or leafy greens with citrus, strawberries, tomatoes or potatoes15.
Vitamin B12 deserves special attention as you age. Low B12 is most common in people over 50 and in people who eat a vegetarian or vegan diet16. Fortified breakfast cereals and some nutritional yeasts are helpful sources for plant-based eaters16.
| Nutrient | How it supports energy | Good food sources | Adult daily target |
|---|---|---|---|
| Iron | Carries oxygen in red blood cells | Lean red meat, poultry, liver, beans, dark leafy greens | 18 mg (women 19 to 50); 8 mg (men, women 51+) |
| Vitamin B12 | Helps form red blood cells | Meat, fish, eggs, dairy, fortified cereals | 2.4 mcg |
| Other B vitamins (B2, B3, B5, B6, folate) | Help turn food into energy | Fish, poultry, eggs, dairy, leafy greens, beans, peas | Varies by vitamin |
| Magnesium | Needed for 300+ body reactions, including energy production | Leafy greens, nuts, seeds, beans, whole grains | 400 to 420 mg (men); 310 to 320 mg (women) |
| Vitamin C | Helps absorb iron and make carnitine | Citrus, kiwi, strawberries, broccoli, peppers | 90 mg (men); 75 mg (women) |
Smart supplement use for everyday energy
Food comes first, but supplements can fill real gaps. That matters when appetite is small, meals are simple or a health condition changes how you absorb nutrients. A few practical habits help you get the most from them.
Start with the amounts used in research and in national guidelines. The daily targets in the table above come from the National Library of Medicine’s MedlinePlus15161718. A basic multivitamin with minerals covers many of the energy nutrients at once.
Match iron to your needs. The women in the iron trial had blood tests showing low iron stores before they began, and they took 80 mg a day13. Ask your clinician to check your iron levels, so you get the amount that fits your body.
Consider B12 after 50. MedlinePlus suggests talking with your healthcare provider about B12 supplements16. Plant-based eaters can look for fortified foods as well16.
Check magnesium with your care team if your kidneys need extra care. MedlinePlus notes that high magnesium intake rarely causes problems, except in people with significantly reduced kidney function17. Your care team can suggest a comfortable amount.
Look for quality seals. Third-party programs such as USP Verified, NSF Certified for Sport and ConsumerLab approved test products for identity and purity.
Give it time. Many nutrition studies run 8 to 12 weeks, and the iron trial lasted 12 weeks13. Notice how you feel over that stretch, perhaps in the same energy diary you use for planning.
Share your full list. Tell your doctor, pharmacist and specialists about every supplement you take so everything works together. If you are in cancer treatment, your cancer care team will want the full list so they can fit everything into your treatment plan.
The bottom line
Energy is not unlimited, especially with a long-term health condition. Occupational therapists have turned that reality into a practical toolkit. Prioritize what matters, plan the week, pace yourself and choose easy positions, and your spoons last longer.
Steady meals and regular fluids keep your energy chemistry supplied. Iron, B vitamins, magnesium and vitamin C are the nutrients to watch. Food comes first, and well-chosen supplements can fill the gaps, with your care team in the loop.
Start small. Pick one swap from the table and one nutrition habit to try this week. Then ask your healthcare provider whether an occupational therapist could help you build a plan that fits your life.
Sources
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Miserandino C. The Spoon Theory. But You Don’t Look Sick. 2003. butyoudontlooksick.com
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National Cancer Institute PDQ Supportive and Palliative Care Editorial Board. Fatigue (PDQ): Health Professional Version. National Cancer Institute. 2024. cancer.gov
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Oncology Nursing Society. Energy Conservation and Activity Management for Fatigue. ONS Symptom Interventions. Undated. ons.org
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American Lung Association. Conserving Energy and Managing Your Daily Activities. American Lung Association. 2026. lung.org
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Johns Hopkins Medicine. How to Conserve Your Energy: Practical Advice for People After Having COVID-19. Johns Hopkins Children’s Center, Adolescent Medicine. Undated. hopkinsmedicine.org
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American Cancer Society. What to Do for Fatigue. American Cancer Society. 2026. cancer.org
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MedlinePlus Medical Encyclopedia. Coping with cancer: managing fatigue. National Library of Medicine. 2024. medlineplus.gov
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Mathiowetz VG, Finlayson ML, Matuska KM, Chen HY, Luo P. Randomized controlled trial of an energy conservation course for persons with multiple sclerosis. Multiple Sclerosis. 2005. pubmed.ncbi.nlm.nih.gov
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Barsevick AM, Dudley W, Beck S, Sweeney C, Whitmer K, Nail L. A randomized clinical trial of energy conservation for patients with cancer-related fatigue. Cancer. 2004. doi.org
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Blikman LJM, van Meeteren J, Twisk JWR, et al. Effectiveness of energy conservation management on fatigue and participation in multiple sclerosis: a randomized controlled trial. Multiple Sclerosis Journal. 2017. repub.eur.nl
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MedlinePlus. Dehydration. National Library of Medicine. 2023. medlineplus.gov
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MedlinePlus. B Vitamins. National Library of Medicine. 2021. medlineplus.gov
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Tardy AL, Pouteau E, Marquez D, Yilmaz C, Scholey A. Vitamins and minerals for energy, fatigue and cognition: a narrative review of the biochemical and clinical evidence. Nutrients. 2020. mdpi.com
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European Commission. Commission Regulation (EU) No 432/2012 establishing a list of permitted health claims made on foods (consolidated text). EUR-Lex. 2025. eur-lex.europa.eu
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MedlinePlus Medical Encyclopedia. Iron in diet. National Library of Medicine. 2025. medlineplus.gov
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MedlinePlus Medical Encyclopedia. Vitamin B12. National Library of Medicine. 2025. medlineplus.gov
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MedlinePlus Medical Encyclopedia. Magnesium in diet. National Library of Medicine. 2025. medlineplus.gov
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MedlinePlus Medical Encyclopedia. Vitamin C. National Library of Medicine. 2025. medlineplus.gov
This article is for general education and is not medical advice. Talk with your healthcare professional about your own health, especially before starting a new supplement if you are pregnant, nursing, taking medicine, or managing a health condition. Statements about dietary supplements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Reviewed October 2026.