
Energy In, Energy Out—aka, “CICO”—is a buzzword anyplace folks speak about their weight reduction journeys nowadays.
However in contrast to another fashionable diets, CICO is nothing new. It’s a conventional method to weight administration that comes right down to this: Should you eat fewer energy than you burn, you’ll drop some weight (1).
Energy are the unit of vitality your physique makes use of for gas. The CICO technique hinges, partly, on the concept having a 3,500 calorie deficit is the equal to dropping a pound. Theoretically, should you create a caloric deficit, you’ll drop some weight (1).
CICO is straightforward to follow (particularly with a calorie monitoring instrument 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 loss program works and tips on how to make it be just right for you.
What’s CICO? (Energy In, Energy Out)
The CICO weight loss program is brief for energy in, energy out, and it’s a easy idea primarily based on the precept of vitality stability.
The concept is that should you devour fewer energy (energy in) than your physique burns (energy out), you’ll drop some weight.
On the flip aspect, should you eat extra energy than you burn, you’ll achieve weight. And should you match the energy you absorb with the energy you burn, you’ll preserve your present weight (1).
How It Works
CICO doesn’t prohibit particular meals or macronutrients like different diets, similar to keto or paleo. As a substitute, it emphasizes calorie monitoring (1).
We’ll undergo tips on how to decide your caloric wants and get one of the best outcomes with this weight administration technique.
Understanding caloric consumption and expenditure
On the coronary heart of CICO is the stability between caloric consumption—AKA the energy you devour from all the pieces you eat and drink—and caloric expenditure, or energy out. These are the energy your physique makes use of to gas all the pieces from respiratory to operating a marathon (1).
Every single 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 discover ways to calculate this under.)
The quantity of muscle you have got performs a task in your metabolism as a result of muscle tissue is metabolically lively—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 drop some 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 once in a while if you wish to preserve 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 got probably 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 offers you a baseline for monitoring your consumption and setting targets (8).
You should 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 understand your BMR, you possibly can add the energy you sometimes burn in your day by day actions to seek out your whole day by day vitality 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 technique, and analysis suggests it’s additionally a crucial a part of weight reduction success (9).
For example, a 2017 examine inspired a small group of contributors to maintain meals and train diaries whereas additionally guiding them to make wholesome meals decisions. Individuals had been additionally informed to weigh themselves a minimum of 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 examine means that utilizing instruments like MyFitnessPal for calorie monitoring, preserving a weight log, and assessing your weight loss program high quality may be very useful.
By logging what you eat and drink, you achieve consciousness of your consuming patterns and might higher management portion sizes and meals decisions. Plus, this stage of accountability helps preserve consistency, which is vital for long-term success.
Why CICO Issues for Weight Administration
Understanding CICO is essential for weight administration, it doesn’t matter what weight loss program you select (10). Whether or not you’re following a vegan weight loss program, a paleo weight loss program, or a Mediterranean weight loss program, that you must produce a calorie deficit with a purpose to drop some weight.
The identical holds true should you’re attempting to realize weight. So as to do that, you’ll must calculate your present calorie wants after which determine how a lot so as to add to create the calorie surplus wanted for weight achieve (10).
Choosing the proper calorie stage on your objective is vital to creating CICO be just right for you. Should you’re attempting to drop some weight, chances are 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). In fact, weight administration is extra difficult than the CICO technique implies, but it surely’s a useful instrument nonetheless (7).
Skilled Opinions

Consultants at MyFitnessPal have some strategies that will help you take advantage of out of the CICO technique to be able 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 possible you’re to stop earlier than your objective. MyFitnessPal knowledge reveals that customers with the minimal day by day calorie objective stop their weight reduction journeys ahead of these with extra beneficiant day by 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 would be able to sustain for the long run.
“Somewhat than focusing solely on numbers, deal with smaller conduct adjustments you can also 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, affords this reminder: “Whereas the CICO technique is straightforward 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 weight loss program as some meals are extra filling whereas others, similar 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 educate us the significance of the vitamins in these energy.
That is the place MyFitnessPal can assist as a result of you possibly can see each the energy—and the nutrient breakdown of these energy. That data can assist empower you to make extra nourishing selections over time.
CICO Well being Advantages
A serious good thing about the CICO weight loss program 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 prone to really feel overwhelmed by an entire weight loss program overhaul.
As a substitute, the CICO technique means that you can make gradual adjustments to your weight loss program whereas prompting you to remain inside your calorie wants, whether or not that’s for weight reduction, achieve, or upkeep (10).
If the CICO weight loss program helps you attain a more healthy weight, you possibly can anticipate 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 vulnerable to diabetes—there was a 16% decrease danger of progressing to sort 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 downside to the CICO technique is the temptation to drastically lower your energy to advertise sooner weight reduction (11). This will really backfire as a result of your physique will suppose it’s ravenous, so your metabolism might decelerate, stalling weight reduction. It could 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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Why Extreme Calorie Deficits Aren’t All the time Good For Weight Loss
Additionally, since calorie counting is the essence of the CICO technique, chances are you’ll ignore the standard of the meals you eat. And in case your weight loss program is excessive in unhealthy meals and low in nutrient-dense meals, chances are you’ll be vulnerable to lacking the vitamins you want and well being issues stemming from an unhealthy weight loss program (13).
In fact, there’s additionally the truth that weight administration is extra difficult than energy in, energy out. Your physique may be very advanced, and the CICO technique ignores different components, like age, genetics, and hormones, that come into play (7).
Calorie monitoring can be dangerous for sure folks. Pregnant and breastfeeding ladies are amongst people who ought to keep away from the CICO weight loss program for weight reduction until suggested by a healthcare skilled (15, 16, 17).
The best way to Do the CICO Eating regimen
If you wish to comply with the CICO weight loss program, you’ll must discover ways to monitor energy. Listed below are some ideas.
Utilizing meals journals and apps
MyFitnessPal is a simple method to monitor energy and vitamin. You may also monitor 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 decisions.
The app makes it simple to enter meals you eat on repeat (be taught concerning the latest Voice Log characteristic!). In fact, you need to use a easy notepad or spreadsheet to log your meals and monitor energy and weight, however that is far more cumbersome than an app.
Calculate caloric wants
To get began with calorie monitoring, you’ll first must calculate your caloric wants (18). You should use a Basal Metabolic Fee 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 may set vitamin and health targets and monitor your progress, and you can even check out your calorie consumption by day and by week.
Monitoring is an important step in assembly your targets, and the way steadily you utilize the app could also be associated to your success. A 2019 examine discovered that after contributors received the hold of it, monitoring took simply quarter-hour a day, and that those that recorded their consumption a minimum of 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:
- Give attention to small, manageable adjustments, like swapping soda for water.
- When deciding the quantity of calorie deficit you’re aiming for, take your exercise stage into 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 devour (you need to use an app like MyFitnessPal to assist along with your monitoring)
Don’t Mechanically Eat All Your Workout routines 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 chances are you’ll naturally be consuming a little bit extra on days you’re employed out with out realizing it (21).
Then, should you additionally determine to make use of train as a purpose to splurge or select to attempt to eat again all of the energy you burned, chances are you’ll wind up consuming greater than your calorie wants for weight reduction and stall your progress.

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Sustaining Power Stability for Weight Upkeep
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 Stage
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 loss program and a calorie monitoring app like MyFitnessPal to assist. Weight upkeep boils right down to consuming the identical quantity of energy as you spend, however since this can be a simplistic system, it might 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 loss program and calorie consumption. That offers you a way of your weight traits, 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 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 drop some weight go on to regain it inside a 5 yr interval (22). That makes counting energy throughout weight upkeep a crucial a part of preserving weight off.
Should 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. Holding monitor of what and the way a lot you’re consuming can assist you preserve the vitality 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 may be useful it doesn’t matter what sort of weight loss program you’re following. Listed below are some methods the CICO weight loss program can assist you on varied diets (11).
CICO and Low-Carb Diets
The truth is {that a} calorie deficit is the spine of weight reduction, so calorie monitoring can assist you establish whether or not you’re attaining that deficit no matter weight loss program you comply with, together with low-carb or keto weight loss program (11).
Plus, you need to use the macro calculator to set your macro targets for low-carb weight loss program, after which monitor your consumption to verify your calorie and carb consumption matches 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 possibly can eat satisfying parts with out overdoing calorie ranges (19). Nevertheless, others, similar to nuts, seeds, avocados, and heart-healthy oils, are calorie-dense.
It’s essential to concentrate to your portion sizes with a purpose to preserve your vitality stability (19). That is the place the CICO weight loss program 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 increased calorie wants than the common particular person because of their excessive ranges of bodily exercise and elevated muscle mass. Should you’re an athlete, following the CICO weight loss program can assist be certain that you’re assembly your calorie wants. Below fueling and over fueling can each harm your efficiency (23).
Instance Meal Plan
Right here’s what a pattern day may seem like on a 1,600 calorie balanced weight loss program.
- 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 onerous boiled egg, 3 ounces rotisserie rooster, shredded or cubed, and a couple of tablespoons feta cheese. Toss with a dressing constructed from 1 ½ teaspoons of each additional virgin olive oil and Dijon mustard, and lemon juice, salt, and pepper to style.
- Snack: Smoothie constructed from 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 faculty and began a desk job, going from pretty lively to principally sedentary. When she was youthful, she described with 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 follow higher consuming habits.
“I noticed the calorie-in/calorie-out weight-loss answer, and it was so useful,” says Gealy. “It requested me how lively 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 all the pieces I wanted in a single spot.”
Widespread Challenges and The best way to Overcome Them
One widespread problem with the CICO weight loss program is barely contemplating energy in vs. energy out moderately than contemplating different components concerned in weight administration, like starvation and fullness, meal timing, sleep patterns, and stress ranges (1).
Whereas the vitality stability equation is the spine of the CICO weight loss program, weight administration is extra difficult, so it’s useful to take these different doable pitfalls (1).
- Consuming the fallacious 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 while you’re now not hungry (24).
- Consuming as few energy as doable. As a substitute, construct wholesome habits that you would be able to maintain, which normally occurs while you take issues slowly (11).
Continuously Requested Questions (FAQs)
Does the CICO weight loss program work?
The CICO weight loss program is an efficient method to weight reduction. It encourages monitoring your meals consumption and monitoring energy. Analysis means that this sort of frequent self-monitoring can promote profitable weight reduction (3).
Must you strive the CICO weight loss program?
Many individuals will profit from attempting the CICO weight loss program, and it may be mixed with varied consuming patterns, so you can also make it be just right for you (18). Nevertheless, should you’re pregnant, nursing, or produce other well being considerations, you must keep away from the CICO weight loss program ( 15, 16, 17).
What are you able to eat on CICO?
What you eat on the CICO weight loss program is as much as you. The CICO weight loss program 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, regardless of which consuming sample you comply with (3).
Is calorie counting efficient for shedding weight?
Calorie counting is an efficient instrument for shedding weight (18). Analysis means that calorie counting, logging your meals consumption, and different self-monitoring behaviors, similar to logging your weight and train, are related to profitable weight reduction (2).
What are some ideas for CICO freshmen?
The vitality stability equation behind the CICO weight loss program is probably not precisely correct, so there could also be some trial and error as you start following the CICO weight loss program. Give attention to consuming a balanced, nutritious weight loss program, 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 while you’re now not hungry as a substitute of while you’ve used up your entire energy for the day (24).
The best way to Use MyFitnessPal for CICO
It’s simple to make use of MyFitnessPal to comply with the CICO weight loss program. Merely log your meals consumption after every meal and snack, and you may see your calorie and vitamin consumption for the day and week. You may also save the meals you frequently 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 loss program.
The Backside Line
CICO is a versatile weight loss program method to weight administration primarily based on the precept of vitality stability: consuming fewer energy than you burn results in weight reduction, whereas consuming extra results in weight achieve (1). To comply with the CICO weight loss program, monitoring your caloric consumption is crucial, and instruments like MyFitnessPal can assist make monitoring simpler and extra correct (2).
However keep in mind, sustainable weight administration isn’t simply concerning the energy in vs. energy out—nourishing your physique with entire, nutrient-rich meals and staying in line with each weight loss program and train will assist your long-term well being and wellness (5).
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