Year after year, when winter begins to ease and the first rays of sunshine appear, the rush to lose the accumulated weight and arrive at summer with a more slender figureMany people leave this goal until the last minute and look for quick fixes to "fit into a wedding dress," feel better on vacation, or simply fit into the dominant aesthetic standards.
In that context, the famous “Operation Bikini”, a concept that has taken root in the collective imagination and which is often accompanied by crash diets, impromptu workouts, and a flood of advice on social media. Behind this urgency, however, lie... Nutritional myths, bad training practices, and real risks to physical and mental health which more and more specialists are trying to debunk.
The Bikini Body Operation as a myth: haste, rebound effect and health at stake
For nutritionists like Irene Muñoz Hormigo from Extremadura, the The idea of achieving a "summer body" in a few weeks by drastically cutting calories It is, quite simply, a dangerous myth. As she herself points out, it is possible to lose weight quickly by not eating, but The rebound effect is practically guaranteed.The weight returns, often with interest, when normal eating habits are resumed.
Beyond the scale, this dynamic can trigger Vitamin and mineral deficiencies, constant fatigue, loss of muscle mass, and hormonal imbalancesOn a psychological level, Operation Bikini, understood as a race against time, is beneficial. a distorted relationship with food and with one's own body, to the point of leading, in the most serious cases, to eating disorders.
In Muñoz's practice, it's common to see people arriving with the expectation of seeing results "right away." His approach, however, goes in the opposite direction: First, it establishes a foundation of nutritional education.and then conducts an individualized study that takes into account metabolism, lifestyle, personal preferences, and health history. With that analysis in hand, he insists that General rules and copy-and-paste diets don't workbecause each person has different needs.
The goal he proposes is not to "go on a diet" for a few weeks, but build habits that can be maintained for yearsalways combined with physical exercise adapted to each case. For Muñoz, going on a diet shouldn't mean going hungry, but learning to eat mindfully and relating to food in a different way.
"Fat-burning" foods, demonized carbohydrates, and "light" products
One of the great classics of Operation Bikini is the supposed "Fat-burning" foods that promise to slim your figure effortlesslyIrene Muñoz is clear on this point: as such, they don't exist. Certain products, like spicy foods or green tea, may slightly increase energy expenditure during digestionBut there's a world of difference between that and "melting" fat. Basing a weight loss strategy on these kinds of claims is, in practice, a waste of time.
Another very common mistake as summer approaches is completely eliminate carbohydrates with the idea of accelerating weight loss. From a nutritional point of view, this decision is absurd: carbohydrates are the main source of energy for the brain and for the musclesAnd without them, physical and cognitive performance suffers. The key is not to eliminate them, but Adjust the quantity and prioritize quality sources such as vegetables, legumes, wholemeal or rye bread.
Supermarket shelves also fill up with "light" and "0%" products when the Operation Bikini season begins. Muñoz clarifies that The "light" label only indicates a reduction of at least 30% in sugars and/or calories compared to the original product.But that doesn't automatically make it healthy. In many cases, it's about ultra-processed foods that are still not recommended, such as sauces or margarines.
A basic recommendation for this time of year—and for the whole year—is to learn to Read the ingredient list beyond the big claims on the packagingA loaf of bread advertised as wholemeal, for example, may contain only 50% wholemeal flour; in that case, its quality is far from ideal. Similarly, if sugars, syrups, or refined oils like palm oil appear among the first ingredients, This is a product that should be reserved for very specific occasions..
The nutritionist reminds us that around 90% of what we eat should come from minimally or unprocessed foods, leaving packaged foods with long lists of additives in the background. In that general pattern, Healthy fats—unsaturated fats—from nuts, oily fish, avocado, or extra virgin olive oil do play a key role. within a balanced diet.
Miracle diets, slimming drugs and the weight of the industry
Meanwhile, in Spain and other European countries, the Illegal sale of weight loss drugs, especially via the internetThe nutritionist warns that these medications They should only be used under medical prescription. and within a comprehensive approach that includes lifestyle changes and professional follow-up. Buying these products independently and self-medicating with them is not recommended. It poses a serious health hazardespecially when its origin or real composition is unknown.
This framework of haste, crash diets, and pills is part of a broader trend that several authors have analyzed in depth. The philosopher Kate Manne, for example, explains how The old “diet industry” has camouflaged itself under the umbrella of “wellness”People no longer talk so much about dieting, but about embarking on "wellness journeys" or "resetting" the body, although deep down the goal is still to mold weight and body shape towards a very narrow ideal.
Manne recalls that Restrictive diets have a very high failure rate in the long termThe body interprets the drastic reduction in energy as a threat and activates mechanisms to regain the lost weight. Thus, dieting repeatedly becomes, paradoxically, one of the best predictors of weight gain over the yearsDespite this, they continue to be sold as the standard solution.
In her analysis, this author also points out how the fatphobia permeates Operation Bikini and the cult of thinnessPeople with larger bodies are judged as lazy or careless, completely ignoring factors such as genetics, living conditions, or even actual medical markers. The result is a system that It degrades certain bodies, not only in terms of health, but also morally, sexually, and intellectually.and which falls especially on women, whose social worth continues to be strongly linked to physical appearance.
Training for Bikini Body: Strength, Cardio, and Smart Routines
Alongside dietary changes, the "Bikini Body" operation often translates into a massive influx into gyms and group classes, often without planningSocial media is full of suggestions for "ultimate workout routines" for glutes, abs, or legs. Spanish personal trainers have begun to qualify these messages to prevent frustration and injuries.
Physical trainer Javier Bernal, very active on platforms like TikTok, addresses those who go to the gym, They do a little bit of everything and end up feeling like they haven't made any progress.His message is that the problem isn't a lack of effort, but the absence of a clear strategy. Instead of randomly chaining machines together, he proposes structured routines that work specific muscle groups and allow progress week by week.
In one of her suggestions for women who want to improve their lower body, Bernal suggests starting with seated leg curl To strengthen the hamstring muscles, perform four sets, gradually increasing the load. Then, propose abduction variants —seated, on a machine and with an elastic band— with high volumes of repetitions to target the hip and gluteal area.
The session is completed with global exercises such as The front squat machine, performed in several sets of 12 repetitionsAnd the popular hip thrust, one of the most effective movements for developing the glutes when performed with good technique. Beyond the specific routine, the central message is that It's advisable to plan your training, record your progress, and avoid improvising every day..
Other exercise professionals, such as Madrid-based trainer and professional Carla Belén Gutiérrez Sánchez, focus on the type of work that should be prioritized when seeking lose fat and improve body compositionHis recommendation is clear: start from a good strength training program to build and maintain muscle massbecause muscle is closely related to basal metabolic rate —the energy the body consumes even at rest—.
Cardio, HIIT and concurrent training: what really works to “burn” fat
Gutiérrez Sánchez recalls that There is no magic training program that works for everyone.but there are general principles supported by evidence. One of them is combining different metabolic pathways and physical capacities, alternating strength training with sessions focused on improving the cardiorespiratory systemThis combination is known as concurrent or mixed training.
In practice, this can translate into weeks with at least three sessions, mixing strength blocks and cardio blocksFor people with a certain level of experience, dividing training by abilities (for example, strength one day, interval training another, longer low-intensity sessions on another day) can be especially interesting.
One of the most deeply rooted beliefs in the "Operation Bikini" mentality is that “Fat starts to burn after half an hour of cardio”The specialist clarifies this idea: at rest, lipids are already a primary source of energy, and during exercise The body combines different fuels depending on the intensity and durationAt moderate and sustained intensities, the percentage of energy from fats may be higher, but if the total volume of work is low, the caloric expenditure will still be limited.
Since many people have little time to train, a practical alternative is the high-intensity interval training protocols, known as HIITThis type of training combines very demanding short intervals—which can reach 90-100% of cardiorespiratory capacity—with recovery periods. According to Gutiérrez Sánchez, HIIT allows They provide a high level of stimulation in less time, reduce joint impact, and increase calorie expenditure even hours after the session ends..
However, he warns that It is not advisable to jump headfirst into high-intensity training if you do not have a prior base.It might be wiser to start with short bursts at around 70% of your maximum capacity and gradually increase the intensity as your body adapts. This way, you can reap the benefits of interval training without increasing the risk of injury or overexertion.
Alongside cardio, the trainer insists that The strength stimulus must be sufficient to generate muscular adaptations.It's not the same to perform squats without weight, continuously and without prolonged rest—which ends up being primarily metabolic work—as Reduce the number of repetitions and increase the load with bands, weights, or changes in support.In this second case, the body improves its ability to recruit muscle fibers and move more weight, which is very useful for preserving muscle during fat loss.
Beyond the gym: cardio, nutrition, and false promises
Personal trainer Sergio Peinado, well known for his educational work in Spain, often emphasizes that Focusing your entire weight loss strategy on cardio is doomed to failureAccording to the scientific evidence cited, aerobic exercise is healthy and helps increase energy expenditure, but Without strength training and a proper diet, the results will fall short..
Peinado emphasizes that You can't gain muscle mass or truly improve endurance through diet alone.Exercise, he reminds us, is much more crucial than is often believed, and that's why he prefers to see people who are slightly overweight but physically active, rather than thin and completely sedentary individuals.
In the area of supplements, she cautiously answers one of the recurring questions of Operation Bikini: Do protein shakes help you gain muscle? Their answer is that they can be useful as long as the The overall diet already provides the necessary amount of proteinThese shakes are simply a convenient way to reach your daily goal when food alone doesn't guarantee it, but they don't build muscle on their own. Without strength training, muscle mass does not grow, regardless of the supplements used.
In the end, the coaches agree on one idea that debunks many of the quick promises ahead of the summer: There are no universal shortcuts or miracle productsWhat works, both in Spain and in other European countries, is adjusting energy intake and paying attention to the quality of food. Move regularly, prioritize strength, and combine it with smart cardio..
Within that equation, some strategies such as modify the food intake window or train in a fasted state These suggestions might make sense for some people, but the answer is highly individual. Some people notice better fat utilization when they exercise on an empty stomach, while others, in the same situation, feel weak and find their workout intensity limited. That's why specialists recommend Always seek qualified nutritional advice and be wary of simplistic messages or passing fads without scientific backing..
Overall, the Bikini Operation as it is usually conceived — fast, obsessive and focused solely on physical appearance — It ends up generating more frustration than well-being.In contrast to this model, nutritionists, trainers, and health specialists propose a change of perspective: moving from seasonal urgency to the gradual building of habitsUnderstanding that a person's worth isn't measured in clothing sizes, and that the changes that truly matter are those that last beyond summer, is key. Ultimately, it's less about preparing your body for a few weeks at the beach and more about taking care of your health year-round, calmly and without punishment.