
Energy In, Energy Out—aka, “CICO”—is a buzzword anyplace individuals discuss their weight reduction journeys nowadays.
However not like another stylish diets, CICO is nothing new. It’s a conventional 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 extra pounds (1).
Energy are the unit of power your physique makes use of for gas. The CICO technique hinges, partially, on the concept having a 3,500 calorie deficit is the equal to shedding a pound. Theoretically, when you create a caloric deficit, you’ll drop extra pounds (1).
CICO is straightforward to apply (particularly with a calorie monitoring software like MyFitnessPal!) so it has gained momentum lately by way of on-line communities and social media. Let’s do a deep dive into how the CICO weight-reduction plan works and the right 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 concept is that when you devour fewer energy (energy in) than your physique burns (energy out), you’ll drop extra pounds.
On the flip facet, when you eat extra energy than you burn, you’ll achieve weight. And when you match the energy you absorb 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, reminiscent of keto or paleo. As a substitute, it emphasizes calorie monitoring (1).
We’ll undergo the right way to decide your caloric wants and get the very 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 every thing you eat and drink—and caloric expenditure, or energy out. These are the energy your physique makes use of to gas every thing from respiration 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 day by day features (1). (You’ll learn 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 think about your metabolism is your physique dimension. Bigger our bodies require extra energy to keep up their dimension, which suggests additionally they burn extra energy (6). As you drop extra pounds, 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, extra 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 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 identify your day by day caloric wants and offers you a baseline for monitoring your consumption and setting targets (8).
You should utilize MyFitnessPal BMR Calculator to simply calculate your BMR. This calculator relies on the Mifflin – St. Jeor equations and it takes your age, peak, weight, and gender to offer an estimate of what number of energy your physique burns at relaxation.
As soon as you realize your BMR, you may add the energy you sometimes burn in your day by day actions to seek 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 technique, and analysis suggests it’s additionally a vital a part of weight reduction success (9).
For 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 have been additionally informed to weigh themselves a minimum of 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 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 selections. Plus, this stage of accountability helps keep 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-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, you might want to produce a calorie deficit with a view to drop extra pounds.
The identical holds true when 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).
Selecting the best calorie stage on your purpose is vital to creating CICO give you the results you want. In the event you’re attempting to drop extra pounds, you might be tempted to set a really low-calorie purpose, 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 difficult than the CICO technique implies, however it’s a useful software nonetheless (7).
Skilled Opinions

Specialists at MyFitnessPal have some recommendations that can assist you take advantage of out of the CICO technique with the intention to attain your targets. Stephanie Nelson, RD, MyFitnessPal’s Lead Scientist, has a cautionary story that’s price repeating: Don’t set your calorie targets too low.
“The extra you restrict your calorie consumption, the more durable your journey turns into and the extra seemingly you’re to give up earlier than your purpose. MyFitnessPal information reveals that customers with the minimal day by day calorie purpose give up 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 adjustments that you may sustain for the long run.
“Reasonably than focusing solely on numbers, concentrate on smaller habits adjustments you can also make,” she provides. Some examples of small adjustments might contain including extra veggies to your dinner or consuming extra protein at breakfast.

In the meantime, Melissa Jaeger, RD, LD, MyFitnessPal Head of Vitamin, gives this reminder: “Whereas the CICO technique 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 think about the standard of your weight-reduction plan as some meals are extra filling whereas others, reminiscent of 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 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 good thing about the CICO weight-reduction plan is how easy and versatile it’s. There’s no checklist of forbidden meals or an in depth variety of guidelines to observe. You’re much less prone to really feel overwhelmed by an entire weight-reduction plan overhaul.
As a substitute, the CICO technique means that you can 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, achieve, or upkeep (10).
If the CICO weight-reduction plan helps you attain a more healthy weight, you may count on the well being perks that come together with that.
Listed here 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 prone to diabetes—there was a 16% decrease danger of progressing to kind 2 diabetes.
- Modest weight reduction can result in enhancements in blood strain and HDL levels of cholesterol. These enhancements translate to a decrease danger 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 girls with PCOS.
Potential Dangers & Drawbacks
One disadvantage to the CICO technique is the temptation to drastically reduce your energy to advertise sooner weight reduction (11). This will truly backfire as a result of your physique will suppose it’s ravenous, so your metabolism could decelerate, stalling weight reduction. It may additionally result in different unhealthy penalties, like a discount in coronary heart muscle dimension, weakened bones, and impaired immune perform (11).

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Additionally, since calorie counting is the essence of the CICO technique, you might 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, you might be prone to lacking the vitamins you want and well being issues stemming from an unhealthy weight-reduction plan (13).
In fact, 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 technique ignores different elements, like age, genetics, and hormones, that come into play (7).
Calorie monitoring can be dangerous for sure individuals. Pregnant and breastfeeding girls 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).
Methods to Do the CICO Weight loss program
If you wish to observe the CICO weight-reduction plan, you’ll must learn to observe energy. Listed here are some suggestions.
Utilizing meals journals and apps
MyFitnessPal is a straightforward method to observe energy and diet. It’s also possible to observe your water consumption and sync your sleep information 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 simple to enter meals you eat on repeat (be taught in regards to the latest Voice Log characteristic!). In fact, you should use a easy notepad or spreadsheet to log your meals and observe 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 utilize a Basal Metabolic Fee Calculator to estimate your BMR after which think about your exercise stage from there.
As soon as you identify your caloric wants and targets, you should use MyFitnessPal to trace your calorie consumption. You possibly can set diet and health targets and observe your progress, and you may as well check out your calorie consumption by day and by week.
Monitoring is a vital step in assembly your targets, and the way steadily you utilize the app could also be associated to your success. A 2019 research discovered that after contributors received the cling 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).
Methods to 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).
- Monitor what you eat and the energy you devour (you should use an app like MyFitnessPal to assist together with your monitoring)
Don’t Mechanically Eat All Your Workouts Energy
One of many greatest 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 might naturally be consuming a bit of extra on days you’re employed out with out realizing it (21).
Then, when 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, you might wind up consuming greater than your calorie wants for weight reduction and stall your progress.

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In case your purpose is to keep up 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 try to keep up your weight as you undergo life, you should 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 bit of trial and error (10).
One nice characteristic of MyFitnessPal is the power to trace your weight alongside together with your weight-reduction plan and calorie consumption. That offers you a way of your weight developments, so you may decide the proper 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 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 extra pounds go on to regain it inside a 5 yr interval (22). That makes counting energy throughout weight upkeep a vital a part of protecting weight off.
In the event you’ve misplaced weight, you’ll want fewer energy to keep up your smaller physique dimension than you probably did to keep up a bigger physique weight. Retaining observe 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 Completely different Diets and Existence
The CICO mannequin may 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 truth is {that a} calorie deficit is the spine of weight reduction, so calorie monitoring may help you identify whether or not you’re reaching that deficit no matter weight-reduction plan you observe, together with low-carb or keto weight-reduction plan (11).
Plus, you should use the macro calculator to set your macro targets for low-carb weight-reduction plan, after which observe 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 greater in quantity and fiber, so you may eat satisfying parts with out overdoing calorie ranges (19). Nevertheless, others, reminiscent of nuts, seeds, avocados, and heart-healthy oils, are calorie-dense.
It’s necessary to concentrate to your portion sizes with a view 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 likely to have greater calorie wants than the typical particular person as a result of their excessive ranges of bodily exercise and elevated muscle mass. In the event you’re an athlete, following the CICO weight-reduction plan may help make sure that you’re assembly your calorie wants. Beneath fueling and over fueling can each harm your efficiency (23).

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Instance Meal Plan
Right here’s what a pattern day might appear to be on a 1,600 calorie balanced weight-reduction plan.
- 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 hen, shredded or cubed, and a pair of tablespoons feta cheese. Toss with a dressing produced from 1 ½ teaspoons of each additional virgin olive oil and Dijon mustard, and lemon juice, salt, and pepper to style.
- Snack: Smoothie produced 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 largely sedentary. When she was youthful, she described with 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 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 lively I used to be and helped me set targets. I might scan bar codes, observe my train and weight reduction, and alter my macros to determine what labored finest. It was every thing I wanted in a single spot.”

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Frequent Challenges and Methods to Overcome Them
One frequent problem with the CICO weight-reduction plan is just contemplating energy in vs. energy out fairly 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 improper 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 potential. As a substitute, construct wholesome habits that you may maintain, which often occurs while you take issues slowly (11).
Steadily Requested Questions (FAQs)
Does the CICO weight-reduction plan work?
The CICO weight-reduction plan 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).
Must you attempt the CICO weight-reduction plan?
Many individuals will profit from attempting the CICO weight-reduction plan, and it may be mixed with numerous consuming patterns, so you can also make it give you the results you want (18). Nevertheless, when you’re pregnant, nursing, or produce other well being considerations, it is 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 observe 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 observe (3).
Is calorie counting efficient for dropping pounds?
Calorie counting is an efficient software for dropping pounds (18). Analysis means that calorie counting, logging your meals consumption, and different self-monitoring behaviors, reminiscent of logging your weight and train, are related to profitable weight reduction (2).
What are some suggestions for CICO newcomers?
The power stability equation behind the CICO weight-reduction plan might 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 while you’re now not hungry as a substitute of while you’ve used up your whole energy for the day (24).
Methods to Use MyFitnessPal for CICO
It’s simple to make use of MyFitnessPal to observe 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. It’s also possible to 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 strategy 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 achieve (1). To observe the CICO weight-reduction plan, monitoring your caloric consumption is vital, 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 entire, nutrient-rich meals and staying in step with each weight-reduction plan and train will assist your long-term well being and wellness (5).
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