Energy In, Energy Out—aka, “CICO”—is a buzzword anyplace individuals speak about their weight reduction journeys today.
However in contrast to another fashionable diets, CICO is nothing new. It’s a standard strategy to weight administration that comes all the way down to this: In the event you eat fewer energy than you burn, you’ll drop some pounds (1).
Energy are the unit of power your physique makes use of for gasoline. The CICO methodology hinges, partly, on the concept having a 3,500 calorie deficit is the equal to dropping a pound. Theoretically, in the event you create a caloric deficit, you’ll drop some pounds (1).
CICO is straightforward to observe (particularly with a calorie monitoring device like MyFitnessPal!) so it has gained momentum just lately by way of on-line communities and social media. Let’s do a deep dive into how the CICO food regimen works and the best way to make it be just right for you.
What’s CICO? (Energy In, Energy Out)
The CICO food regimen is brief for energy in, energy out, and it’s a easy idea based mostly on the precept of power stability.
The thought is that in the event you eat fewer energy (energy in) than your physique burns (energy out), you’ll drop some pounds.
On the flip aspect, in the event you eat extra energy than you burn, you’ll acquire weight. And in the event you match the energy you soak up with the energy you burn, you’ll keep your present weight (1).
How It Works
CICO doesn’t limit particular meals or macronutrients like different diets, akin to keto or paleo. As a substitute, it emphasizes calorie monitoring (1).
We’ll undergo the best way to decide your caloric wants and get the perfect outcomes with this weight administration methodology.
Understanding caloric consumption and expenditure
On the coronary heart of CICO is the stability between caloric consumption—AKA the energy you eat from all the pieces you eat and drink—and caloric expenditure, or energy out. These are the energy your physique makes use of to gasoline all the pieces from respiration to working a marathon (1).
Each day, your physique burns energy simply to remain alive. Your basal metabolic price (BMR) is the variety of energy your physique makes use of to carry out these day by day capabilities (1). (You’ll learn to calculate this beneath.)
The quantity of muscle you may have performs a task in your metabolism as a result of muscle tissue is metabolically energetic—it burns energy at relaxation (6).
One other think about your metabolism is your physique measurement. Bigger our bodies require extra energy to keep up their measurement, which suggests additionally they burn extra energy (6). As you drop some pounds, your physique’s caloric wants change, so that you’ll require fewer energy. Throughout a weight reduction journey, you’ll have to recalculate your BMR occasionally if you wish to keep a calorie deficit (7).
Outdoors of your BMR, further energy are burned by way of bodily exercise, together with train, strolling, and even chores like cleansing and cooking. That is the a part of your caloric expenditure that you’ve got essentially the most management over (6).
Calculating basal metabolic price (BMR)
A key step in utilizing CICO is calculating your basal metabolic price (BMR), which tells you what number of energy your physique wants to remain alive (6). Realizing your BMR helps you establish your day by day caloric wants and provides you a baseline for monitoring your consumption and setting targets (8).
You need to use MyFitnessPal BMR Calculator to simply calculate your BMR. This calculator is predicated on the Mifflin – St. Jeor equations and it takes your age, top, weight, and gender to supply an estimate of what number of energy your physique burns at relaxation.
As soon as you already know your BMR, you possibly can add the energy you sometimes burn in your day by day actions to search out your whole day by day power expenditure. That’s a extra correct reflection of your caloric wants than your BMR.
The significance of monitoring energy
Calorie monitoring is the spine of the CICO methodology, and analysis suggests it’s additionally a essential a part of weight reduction success (9).
As an example, a 2017 research inspired a small group of contributors to maintain meals and train diaries whereas additionally guiding them to make wholesome meals selections. Individuals had been additionally instructed to weigh themselves not less than weekly (9).
What the researchers discovered is that individuals who tracked extra religiously had been extra profitable at sustaining weight reduction in comparison with uncommon and inconsistent trackers whose weight tended to fluctuate extra. The much less constant trackers misplaced weight over the summer time however gained it over the vacations (9).
This research means that utilizing instruments like MyFitnessPal for calorie monitoring, retaining a weight log, and assessing your food regimen high quality will be very useful.
By logging what you eat and drink, you acquire consciousness of your consuming patterns and might higher management portion sizes and meals selections. Plus, this stage of accountability helps keep consistency, which is essential for long-term success.
Why CICO Issues for Weight Administration
Understanding CICO is essential for weight administration, it doesn’t matter what food regimen you select (10). Whether or not you’re following a vegan food regimen, a paleo food regimen, or a Mediterranean food regimen, it’s essential produce a calorie deficit with a view to drop some pounds.
The identical holds true in the event you’re attempting to achieve weight. With the intention to do that, you’ll have to calculate your present calorie wants after which resolve how a lot so as to add to create the calorie surplus wanted for weight acquire (10).
Choosing the proper calorie stage to your aim is essential to creating CICO be just right for you. In the event you’re attempting to drop some pounds, you could be tempted to set a really low-calorie aim, however this isn’t suggested. Going too low can put your physique in hunger mode, which is able to stall weight reduction (11). In fact, weight administration is extra sophisticated than the CICO methodology implies, nevertheless it’s a useful device nonetheless (7).
Professional Opinions

Specialists at MyFitnessPal have some ideas that can assist you take advantage of out of the CICO methodology with the intention to attain your targets. Stephanie Nelson, RD, MyFitnessPal’s Lead Scientist, has a cautionary story that’s value repeating: Don’t set your calorie targets too low.
“The extra you restrict your calorie consumption, the tougher your journey turns into and the extra doubtless you’re to stop earlier than your aim. MyFitnessPal knowledge reveals that customers with the minimal day by day calorie aim stop their weight reduction journeys prior to these with extra beneficiant day by day calorie targets,” she explains.
Nelson says it’s extra sustainable to take a slower strategy to weight reduction as a result of you find yourself making modifications that you would be able to sustain for the long run.
“Reasonably than focusing solely on numbers, concentrate on smaller conduct modifications you may make,” she provides. Some examples of small modifications may contain including extra veggies to your dinner or consuming extra protein at breakfast.

In the meantime, Melissa Jaeger, RD, LD, MyFitnessPal Head of Diet, affords this reminder: “Whereas the CICO methodology is easy in idea, it isn’t the entire image of how protected and sustainable weight reduction happens.”
For wholesome weight reduction, it’s additionally essential to think about the standard of your food regimen as some meals are extra filling whereas others, akin to closely processed meals, are simpler to overeat. Jaeger says that one draw back of focusing solely on energy in vs. energy out is that it doesn’t train us the significance of the vitamins in these energy.
That is the place MyFitnessPal might help as a result of you possibly can see each the energy—and the nutrient breakdown of these energy. That info might help empower you to make extra nourishing selections over time.
CICO Well being Advantages
A significant good thing about the CICO food regimen is how easy and versatile it’s. There’s no record of forbidden meals or an intensive variety of guidelines to comply with. You’re much less more likely to really feel overwhelmed by an entire food regimen overhaul.
As a substitute, the CICO methodology means that you can make gradual modifications to your food regimen whereas prompting you to remain inside your calorie wants, whether or not that’s for weight reduction, acquire, or upkeep (10).
If the CICO food regimen helps you attain a more healthy weight, you possibly can count on the well being perks that come together with that.
Listed below are a few of these research-backed advantages (12):
- Dropping a small quantity of weight—simply 5%—has been related to higher glucose management and triglyceride ranges.
- For each 2.2 kilos of weight reduction amongst individuals who had glucose intolerance—placing them susceptible to diabetes—there was a 16% decrease threat of progressing to kind 2 diabetes.
- Modest weight reduction can result in enhancements in blood stress and HDL levels of cholesterol. These enhancements translate to a decrease threat of coronary heart illness.
- Enhancements in knee perform and ache amongst these with osteoarthritis
- A discount of fats within the liver
- Higher ovulatory perform and probability of being pregnant amongst ladies with PCOS.
Potential Dangers & Drawbacks
One downside to the CICO methodology is the temptation to drastically lower your energy to advertise quicker weight reduction (11). This may really backfire as a result of your physique will assume it’s ravenous, so your metabolism might decelerate, stalling weight reduction. It might probably additionally result in different unhealthy penalties, like a discount in coronary heart muscle measurement, weakened bones, and impaired immune perform (11).

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Additionally, since calorie counting is the essence of the CICO methodology, you could ignore the standard of the meals you eat. And in case your food regimen is excessive in unhealthy meals and low in nutrient-dense meals, you could be susceptible to lacking the vitamins you want and well being issues stemming from an unhealthy food regimen (13).
In fact, there’s additionally the truth that weight administration is extra sophisticated than energy in, energy out. Your physique could be very complicated, and the CICO methodology ignores different elements, like age, genetics, and hormones, that come into play (7).
Calorie monitoring will also be dangerous for sure individuals. Pregnant and breastfeeding ladies are amongst people who ought to keep away from the CICO food regimen for weight reduction except suggested by a healthcare skilled (15, 16, 17).
The best way to Do the CICO Weight loss plan
If you wish to comply with the CICO food regimen, you’ll have to learn to observe energy. Listed below are some ideas.
Utilizing meals journals and apps
MyFitnessPal is a straightforward solution to observe energy and vitamin. It’s also possible to observe your water consumption and sync your sleep knowledge with MyFitnessPal, permitting you to find out how meals impacts your sleep high quality and the way your sleep impacts your urge for food and meals selections.
The app makes it straightforward to enter meals you eat on repeat (be taught in regards to the latest Voice Log function!). In fact, you should utilize a easy notepad or spreadsheet to log your meals and observe energy and weight, however that is way more cumbersome than an app.
Calculate caloric wants
To get began with calorie monitoring, you’ll first have to calculate your caloric wants (18). You need to use a Basal Metabolic Fee Calculator to estimate your BMR after which think about your exercise stage from there.
As soon as you establish your caloric wants and targets, you should utilize MyFitnessPal to trace your calorie consumption. You possibly can set vitamin and health targets and observe your progress, and you can too check out your calorie consumption by day and by week.
Monitoring is a vital step in assembly your targets, and the way regularly you employ the app could also be associated to your success. A 2019 research discovered that when contributors obtained the dangle of it, monitoring took simply quarter-hour a day, and that those that recorded their consumption not less than twice a day had better weight reduction success than those that weren’t as constant (2).
The best way to Create a Caloric Deficit for Weight Loss
Listed below are the fundamentals of utilizing CICO for weight reduction:
- Deal with small, manageable modifications, like swapping soda for water.
- When deciding the quantity of calorie deficit you’re aiming for, take your exercise stage under consideration (8, 20).
- Select nutritious and satisfying meals like non-starchy greens and lean protein (3, 18).
- Measure portion sizes, particularly high-calorie meals like nuts and cheese (19).
- Monitor what you eat and the energy you eat (you should utilize an app like MyFitnessPal to assist along with your monitoring)
Don’t Robotically Eat All Your Workouts Energy
One of many largest errors I see amongst individuals on a weight reduction journey is consuming again train energy.
Whereas useful, common train doesn’t burn fairly as many energy as you—or your wearables—might imagine. Plus, train could make you hungrier, so you could naturally be consuming a bit extra on days you’re employed out with out realizing it (21).
Then, in the event you additionally resolve to make use of train as a motive to splurge or select to attempt to eat again all of the energy you burned, you could wind up consuming greater than your calorie wants for weight reduction and stall your progress.

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Sustaining Power Steadiness for Weight Upkeep
In case your aim is to keep up your weight, you’ll have to match your calorie consumption to the energy you burn every day (10).
Discovering Your Upkeep Stage
Whether or not you’ve simply misplaced weight or try to keep up your weight as you undergo life, you should utilize the CICO food regimen and a calorie monitoring app like MyFitnessPal to assist. Weight upkeep boils all the way down to consuming the identical quantity of energy as you spend, however since it is a simplistic system, it will probably take a bit trial and error (10).
One nice function of MyFitnessPal is the power to trace your weight alongside along with your food regimen and calorie consumption. That gives you a way of your weight tendencies, so you possibly can decide the appropriate stage of energy wanted for weight upkeep.
In upkeep, use your starvation and fullness cues to eat meals in quantities that match your urge for food. Proceed to trace your energy and do your greatest to remain inside your wants, however don’t override your physique’s alerts.
It helps to decide on fiber- and protein-rich meals, which do a greater job of controlling starvation whereas managing calorie consumption (3).

The significance of continued counting energy throughout upkeep
Research counsel that as much as 80% of people that drop some pounds go on to regain it inside a 5 12 months interval (22). That makes counting energy throughout weight upkeep a essential a part of retaining weight off.
In the event you’ve misplaced weight, you’ll want fewer energy to keep up your smaller physique measurement than you probably did to keep up a bigger physique weight. Holding observe of what and the way a lot you’re consuming might help you keep the power stability wanted for weight upkeep.
Frequent meals monitoring and weighing your self have been tied to weight upkeep success (22).
CICO for Totally different Diets and Life
The CICO mannequin will be useful it doesn’t matter what kind of food regimen you’re following. Listed below are some methods the CICO food regimen might help you on varied diets (11).
CICO and Low-Carb Diets
The fact is {that a} calorie deficit is the spine of weight reduction, so calorie monitoring might help you establish whether or not you’re reaching that deficit no matter food regimen you comply with, together with low-carb or keto food regimen (11).
Plus, you should utilize the macro calculator to set your macro targets for low-carb food regimen, after which observe your consumption to ensure your calorie and carb consumption suits your targets.
CICO for Vegetarians and Vegans
Some plant-based meals like greens and fruits are decrease in energy however larger in quantity and fiber, so you possibly can eat satisfying parts with out overdoing calorie ranges (19). Nonetheless, others, akin to nuts, seeds, avocados, and heart-healthy oils, are calorie-dense.
It’s essential to concentrate to your portion sizes with a view to keep your power stability (19). That is the place the CICO food regimen can turn out to be useful, serving to you handle your calorie consumption on a plant-based consuming sample (11).
CICO for Athletes
Athletes are likely to have larger calorie wants than the common individual because of their excessive ranges of bodily exercise and elevated muscle mass. In the event you’re an athlete, following the CICO food regimen might help make sure that you’re assembly your calorie wants. Below fueling and over fueling can each damage your efficiency (23).

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Instance Meal Plan
Right here’s what a pattern day may appear like on a 1,600 calorie balanced food regimen.
- Breakfast: Two entire grain toaster waffles topped with ½ cup plain Greek yogurt, ½ cup frozen berries (heated) , 2 tablespoons chopped nuts, and 1 teaspoon maple syrup.
- Lunch: Cobb salad made with 2 cups child spinach, ¼ cup chopped cherry tomatoes, ¼ avocado, diced, 1 sliced arduous boiled egg, 3 ounces rotisserie hen, shredded or cubed, and a couple of tablespoons feta cheese. Toss with a dressing comprised of 1 ½ teaspoons of each additional virgin olive oil and Dijon mustard, and lemon juice, salt, and pepper to style.
- Snack: Smoothie comprised of a mix of 1 cup unsweetened vanilla almond milk, ¼ avocado, ½ frozen banana, and 1 cup child spinach.
- Dinner: 6 ounces of broiled or grilled salmon, 1 cup of roasted broccoli, and ½ cup brown rice.
- Snack: 1 ounce of darkish chocolate
Success Tales & Testimonials
As a younger grownup, Kaylin Gealy had simply graduated school and began a desk job, going from pretty energetic to largely sedentary. When she was youthful, she described having the ability to eat no matter she wished, however she quickly discovered her weight fluctuating between 218 and 224 kilos.
To get again on observe, Gealy began strolling and utilizing MyFitnessPal to observe higher consuming habits.
“I noticed the calorie-in/calorie-out weight-loss answer, and it was so useful,” says Gealy. “It requested me how energetic I used to be and helped me set targets. I may scan bar codes, observe my train and weight reduction, and modify my macros to determine what labored greatest. It was all the pieces I wanted in a single spot.”

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Frequent Challenges and The best way to Overcome Them
One frequent problem with the CICO food regimen is simply contemplating energy in vs. energy out slightly than contemplating different elements concerned in weight administration, like starvation and fullness, meal timing, sleep patterns, and stress ranges (1).
Whereas the power stability equation is the spine of the CICO food regimen, weight administration is extra sophisticated, so it’s useful to take these different potential pitfalls (1).
- Consuming the unsuitable meals. Fill your plate with lean proteins, greens and fruits, wholesome starches, and heart-healthy fat. These meals are more healthy and extra filling than ultra-processed meals (19).
- Consuming simply because you may have energy left over, whether or not you’re hungry or not. As a substitute, cease consuming once you’re not hungry (24).
- Consuming as few energy as potential. As a substitute, construct wholesome habits that you would be able to maintain, which normally occurs once you take issues slowly (11).
Regularly Requested Questions (FAQs)
Does the CICO food regimen work?
The CICO food regimen is an efficient strategy to weight reduction. It encourages monitoring your meals consumption and monitoring energy. Analysis means that this type of frequent self-monitoring can promote profitable weight reduction (3).
Do you have to strive the CICO food regimen?
Many individuals will profit from attempting the CICO food regimen, and it may be mixed with varied consuming patterns, so you may make it be just right for you (18). Nonetheless, in the event you’re pregnant, nursing, or produce other well being considerations, it is best to keep away from the CICO food regimen ( 15, 16, 17).
What are you able to eat on CICO?
What you eat on the CICO food regimen is as much as you. The CICO food regimen is versatile, so you possibly can comply with the consuming sample that works for you. It’s healthiest to eat entire or much less processed meals and to emphasise plant meals, irrespective of which consuming sample you comply with (3).
Is calorie counting efficient for shedding pounds?
Calorie counting is an efficient device for shedding pounds (18). Analysis means that calorie counting, logging your meals consumption, and different self-monitoring behaviors, akin to logging your weight and train, are related to profitable weight reduction (2).
What are some ideas for CICO rookies?
The power stability equation behind the CICO food regimen will not be precisely correct, so there could also be some trial and error as you start following the CICO food regimen. Deal with consuming a balanced, nutritious food regimen, log your meals as you go, and attempt to keep inside your calorie limits (2, 3). It’s additionally a good suggestion to tune into your starvation and fullness, and to cease consuming once you’re not hungry as an alternative of once you’ve used up your entire energy for the day (24).
The best way to Use MyFitnessPal for CICO
It’s straightforward to make use of MyFitnessPal to comply with the CICO food regimen. Merely log your meals consumption after every meal and snack, and you may see your calorie and vitamin consumption for the day and week. It’s also possible to save the meals you commonly eat, saving you time every time you add them to your log.
Different useful options embody train monitoring and weight monitoring. These instruments make it easy to make use of MyFitnessPal for the CICO food regimen.
The Backside Line
CICO is a versatile food regimen strategy to weight administration based mostly on the precept of power stability: consuming fewer energy than you burn results in weight reduction, whereas consuming extra results in weight acquire (1). To comply with the CICO food regimen, monitoring your caloric consumption is essential, and instruments like MyFitnessPal might help make monitoring simpler and extra correct (2).
However keep in mind, sustainable weight administration isn’t simply in regards to the energy in vs. energy out—nourishing your physique with entire, nutrient-rich meals and staying in keeping with each food regimen and train will help your long-term well being and wellness (5).
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