Energy In, Energy Out—aka, “CICO”—is a buzzword anyplace folks discuss their weight reduction journeys lately.
However not like another fashionable diets, CICO is nothing new. It’s a standard method to weight administration that comes all the way down to this: In case you eat fewer energy than you burn, you’ll shed weight (1).
Energy are the unit of power your physique makes use of for gasoline. The CICO methodology hinges, partially, on the concept having a 3,500 calorie deficit is the equal to dropping a pound. Theoretically, for those who create a caloric deficit, you’ll shed weight (1).
CICO is simple to apply (particularly with a calorie monitoring software like MyFitnessPal!) so it has gained momentum just lately by on-line communities and social media. Let’s do a deep dive into how the CICO weight-reduction plan works and the way to make it give you the results you want.
What’s CICO? (Energy In, Energy Out)
The CICO weight-reduction plan is brief for energy in, energy out, and it’s a easy idea primarily based on the precept of power stability.
The thought is that for those who eat fewer energy (energy in) than your physique burns (energy out), you’ll shed weight.
On the flip facet, for those who eat extra energy than you burn, you’ll acquire weight. And for those who match the energy you absorb with the energy you burn, you’ll keep your present weight (1).
How It Works
CICO doesn’t prohibit particular meals or macronutrients like different diets, comparable to keto or paleo. As a substitute, it emphasizes calorie monitoring (1).
We’ll undergo the way to decide your caloric wants and get one of the best 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 the whole lot you eat and drink—and caloric expenditure, or energy out. These are the energy your physique makes use of to gasoline the whole lot from respiratory to working a marathon (1).
Daily, your physique burns energy simply to remain alive. Your basal metabolic charge (BMR) is the variety of energy your physique makes use of to carry out these each day features (1). (You’ll learn to calculate this beneath.)
The quantity of muscle you have got performs a task in your metabolism as a result of muscle tissue is metabolically energetic—it burns energy at relaxation (6).
One other consider your metabolism is your physique dimension. Bigger our bodies require extra energy to take care of their dimension, which implies in addition they burn extra energy (6). As you shed weight, your physique’s caloric wants change, so that you’ll require fewer energy. Throughout a weight reduction journey, you’ll must recalculate your BMR every now and then if you wish to keep a calorie deficit (7).
Exterior of your BMR, further energy are burned by 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 probably the most management over (6).
Calculating basal metabolic charge (BMR)
A key step in utilizing CICO is calculating your basal metabolic charge (BMR), which tells you what number of energy your physique wants to remain alive (6). Realizing your BMR helps you establish your each day caloric wants and offers 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 relies on the Mifflin – St. Jeor equations and it takes your age, top, weight, and gender to offer an estimate of what number of energy your physique burns at relaxation.
As soon as you already know your BMR, you may add the energy you usually burn in your each day actions to seek out your complete each 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 members to maintain meals and train diaries whereas additionally guiding them to make wholesome meals selections. Contributors have been additionally advised to weigh themselves at the least weekly (9).
What the researchers discovered is that individuals who tracked extra religiously have 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, protecting a weight log, and assessing your weight-reduction plan 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 weight-reduction plan you select (10). Whether or not you’re following a vegan weight-reduction plan, a paleo weight-reduction plan, or a Mediterranean weight-reduction plan, that you must produce a calorie deficit with the intention to shed weight.
The identical holds true for those who’re making an attempt to realize weight. With a purpose to do that, you’ll must 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).
Selecting the best calorie stage in your objective is essential to creating CICO give you the results you want. In case you’re making an attempt to shed weight, it’s possible you’ll be tempted to set a really low-calorie objective, however this isn’t suggested. Going too low can put your physique in hunger mode, which can stall weight reduction (11). After all, weight administration is extra difficult than the CICO methodology implies, however it’s a useful software nonetheless (7).
Skilled Opinions

Specialists at MyFitnessPal have some options that can assist you take advantage of out of the CICO methodology as a way 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 seemingly you might be to stop earlier than your objective. MyFitnessPal information reveals that customers with the minimal each day calorie objective stop their weight reduction journeys ahead of these with extra beneficiant each day calorie targets,” she explains.
Nelson says it’s extra sustainable to take a slower method to weight reduction as a result of you find yourself making adjustments that you may sustain for the long run.
“Somewhat than focusing solely on numbers, give attention to smaller habits adjustments you may make,” she provides. Some examples of small adjustments may contain including extra veggies to your dinner or consuming extra protein at breakfast.

In the meantime, Melissa Jaeger, RD, LD, MyFitnessPal Head of Vitamin, presents this reminder: “Whereas the CICO methodology is easy in idea, it isn’t the entire image of how secure and sustainable weight reduction happens.”
For wholesome weight reduction, it’s additionally necessary to contemplate the standard of your weight-reduction plan as some meals are extra filling whereas others, comparable 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 may help as a result of you may see each the energy—and the nutrient breakdown of these energy. That info may help empower you to make extra nourishing choices over time.
CICO Well being Advantages
A serious advantage of the CICO weight-reduction plan is how easy and versatile it’s. There’s no checklist of forbidden meals or an intensive variety of guidelines to comply with. You’re much less more likely to really feel overwhelmed by a whole weight-reduction plan overhaul.
As a substitute, the CICO methodology lets you make gradual adjustments to your weight-reduction plan whereas prompting you to remain inside your calorie wants, whether or not that’s for weight reduction, acquire, or upkeep (10).
If the CICO weight-reduction plan helps you attain a more healthy weight, you may anticipate the well being perks that come together with that.
Listed here are a few of these research-backed advantages (12):
- Shedding 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 prone to diabetes—there was a 16% decrease danger 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 danger of coronary heart illness.
- Enhancements in knee operate and ache amongst these with osteoarthritis
- A discount of fats within the liver
- Higher ovulatory operate and chance of being pregnant amongst ladies with PCOS.
Potential Dangers & Drawbacks
One disadvantage to the CICO methodology is the temptation to drastically lower your energy to advertise sooner weight reduction (11). This may truly backfire as a result of your physique will suppose it’s ravenous, so your metabolism could decelerate, stalling weight reduction. It might additionally result in different unhealthy penalties, like a discount in coronary heart muscle dimension, weakened bones, and impaired immune operate (11).

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Additionally, since calorie counting is the essence of the CICO methodology, it’s possible you’ll ignore the standard of the meals you eat. And in case your weight-reduction plan is excessive in unhealthy meals and low in nutrient-dense meals, it’s possible you’ll be prone to lacking the vitamins you want and well being issues stemming from an unhealthy weight-reduction plan (13).
After all, there’s additionally the truth that weight administration is extra difficult than energy in, energy out. Your physique may 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 folks. Pregnant and breastfeeding ladies are amongst people who ought to keep away from the CICO weight-reduction plan for weight reduction except suggested by a healthcare skilled (15, 16, 17).
How one can Do the CICO Food plan
If you wish to comply with the CICO weight-reduction plan, you’ll must learn to monitor energy. Listed here are some suggestions.
Utilizing meals journals and apps
MyFitnessPal is a straightforward technique to monitor energy and diet. You can even monitor your water consumption and sync your sleep information with MyFitnessPal, permitting you to learn the way meals impacts your sleep high quality and the way your sleep impacts your urge for food and meals selections.
The app makes it simple to enter meals you eat on repeat (be taught in regards to the latest Voice Log characteristic!). After all, you need to use a easy notepad or spreadsheet to log your meals and monitor energy and weight, however that is rather more cumbersome than an app.
Calculate caloric wants
To get began with calorie monitoring, you’ll first must calculate your caloric wants (18). You need to use a Basal Metabolic Charge Calculator to estimate your BMR after which consider your exercise stage from there.
As soon as you establish your caloric wants and targets, you need to use MyFitnessPal to trace your calorie consumption. You’ll be able to set diet and health targets and monitor your progress, and you may as well check out your calorie consumption by day and by week.
Monitoring is an important step in assembly your targets, and the way continuously you utilize the app could also be associated to your success. A 2019 research discovered that when members acquired the hold of it, monitoring took simply quarter-hour a day, and that those that recorded their consumption at the least twice a day had higher weight reduction success than those that weren’t as constant (2).
How one can Create a Caloric Deficit for Weight Loss
Listed here are the fundamentals of utilizing CICO for weight reduction:
- Concentrate on small, manageable adjustments, 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).
- Observe what you eat and the energy you eat (you need to use an app like MyFitnessPal to assist along with your monitoring)
Don’t Robotically Eat All Your Workouts Energy
One of many greatest errors I see amongst folks 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 it’s possible you’ll naturally be consuming a little bit extra on days you’re employed out with out realizing it (21).
Then, for those who additionally resolve to make use of train as a cause to splurge or select to attempt to eat again all of the energy you burned, it’s possible you’ll wind up consuming greater than your calorie wants for weight reduction and stall your progress.

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In case your objective is to take care of your weight, you’ll must match your calorie consumption to the energy you burn every day (10).
Discovering Your Upkeep Degree
Whether or not you’ve simply misplaced weight or are attempting to take care of your weight as you undergo life, you need to use the CICO weight-reduction plan 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 this can be a simplistic components, it will probably take a little bit trial and error (10).
One nice characteristic of MyFitnessPal is the flexibility to trace your weight alongside along with your weight-reduction plan and calorie consumption. That offers you a way of your weight developments, so you may decide the fitting 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 finest to remain inside your wants, however don’t override your physique’s indicators.
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 shed weight go on to regain it inside a 5 yr interval (22). That makes counting energy throughout weight upkeep a essential a part of protecting weight off.
In case you’ve misplaced weight, you’ll want fewer energy to take care of your smaller physique dimension than you probably did to take care of a bigger physique weight. Conserving monitor of what and the way a lot you’re consuming may 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 Existence
The CICO mannequin will be useful it doesn’t matter what kind of weight-reduction plan you’re following. Listed here are some methods the CICO weight-reduction plan may help you on numerous diets (11).
CICO and Low-Carb Diets
The fact is {that a} calorie deficit is the spine of weight reduction, so calorie monitoring may help you establish whether or not you’re reaching that deficit no matter weight-reduction plan you comply with, together with low-carb or keto weight-reduction plan (11).
Plus, you need to use the macro calculator to set your macro targets for low-carb weight-reduction plan, after which monitor your consumption to verify 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 increased in quantity and fiber, so you may eat satisfying parts with out overdoing calorie ranges (19). Nevertheless, others, comparable to nuts, seeds, avocados, and heart-healthy oils, are calorie-dense.
It’s necessary to concentrate to your portion sizes with the intention to keep your power stability (19). That is the place the CICO weight-reduction plan 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 inclined to have increased calorie wants than the typical particular person as a result of their excessive ranges of bodily exercise and elevated muscle mass. In case you’re an athlete, following the CICO weight-reduction plan may help make sure that you’re assembly your calorie wants. Underneath 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 to be on a 1,600 calorie balanced weight-reduction plan.
- Breakfast: Two complete 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 onerous boiled egg, 3 ounces rotisserie hen, shredded or cubed, and a pair of tablespoons feta cheese. Toss with a dressing constituted of 1 ½ teaspoons of each further virgin olive oil and Dijon mustard, and lemon juice, salt, and pepper to style.
- Snack: Smoothie constituted 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 needed, however she quickly discovered her weight fluctuating between 218 and 224 kilos.
To get again on monitor, Gealy began strolling and utilizing MyFitnessPal to apply higher consuming habits.
“I noticed the calorie-in/calorie-out weight-loss resolution, 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, monitor my train and weight reduction, and alter my macros to determine what labored finest. It was the whole lot I wanted in a single spot.”

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Widespread Challenges and How one can Overcome Them
One widespread problem with the CICO weight-reduction plan is simply contemplating energy in vs. energy out moderately 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 weight-reduction plan, weight administration is extra difficult, so it’s useful to take these different potential pitfalls (1).
- Consuming the mistaken 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 have got energy left over, whether or not you’re hungry or not. As a substitute, cease consuming if you’re now not hungry (24).
- Consuming as few energy as potential. As a substitute, construct wholesome habits that you may maintain, which normally occurs if you take issues slowly (11).
Steadily Requested Questions (FAQs)
Does the CICO weight-reduction plan work?
The CICO weight-reduction plan is an efficient method 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).
Must you attempt the CICO weight-reduction plan?
Many individuals will profit from making an attempt the CICO weight-reduction plan, and it may be mixed with numerous consuming patterns, so you may make it give you the results you want (18). Nevertheless, for those who’re pregnant, nursing, or produce other well being issues, it’s best to keep away from the CICO weight-reduction plan ( 15, 16, 17).
What are you able to eat on CICO?
What you eat on the CICO weight-reduction plan is as much as you. The CICO weight-reduction plan is versatile, so you may comply with the consuming sample that works for you. It’s healthiest to eat complete or much less processed meals and to emphasise plant meals, irrespective of which consuming sample you comply with (3).
Is calorie counting efficient for losing a few pounds?
Calorie counting is an efficient software for losing a few pounds (18). Analysis means that calorie counting, logging your meals consumption, and different self-monitoring behaviors, comparable to logging your weight and train, are related to profitable weight reduction (2).
What are some suggestions for CICO rookies?
The power stability equation behind the CICO weight-reduction plan will not be precisely correct, so there could also be some trial and error as you start following the CICO weight-reduction plan. Concentrate on consuming a balanced, nutritious weight-reduction plan, 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 if you’re now not hungry as a substitute of if you’ve used up your entire energy for the day (24).
How one can Use MyFitnessPal for CICO
It’s simple to make use of MyFitnessPal to comply with the CICO weight-reduction plan. Merely log your meals consumption after every meal and snack, and you’ll see your calorie and diet consumption for the day and week. You can even save the meals you often 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 weight-reduction plan.
The Backside Line
CICO is a versatile weight-reduction plan method to weight administration primarily based 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 weight-reduction plan, monitoring your caloric consumption is essential, and instruments like MyFitnessPal may help make monitoring simpler and extra correct (2).
However bear in mind, sustainable weight administration isn’t simply in regards to the energy in vs. energy out—nourishing your physique with complete, nutrient-rich meals and staying per each weight-reduction plan and train will assist your long-term well being and wellness (5).
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