The Summer Rebound: Losing 6 Kilos, Regaining 7 in Just One Month

The Summer Rebound: From 88 to 82, and back to 89 in three months

On June 1st, someone weighed 88 kilos. On August 1st, after two months of swimming, walking, and eating less, the scale read 82. One month later, the weight is back at 89. The 'Bikini Operation' has become a rebound effect that returned the flotation device with interest. The question is whether this is a personal failure or a predictable physiological response.

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The Debate on the Rebound Effect: Reality or Myth?

The intense and short-term caloric restriction causes both a psychological and hormonal rebound. Leptin, the hormone that regulates appetite, is disrupted in most of the Western population accustomed to a diet of ultra-processed foods and carbohydrates. The body, with its ancestral survival chip, reacts by accumulating fat even when the same foods are eaten again. Some maintain that the rebound effect is unfounded nonsense, but empirical evidence from those who have experienced it suggests it is perhaps the most real thing there is: two days of eating little, trinc by a binge.

The Role of Water and Carbohydrates in Seasonal Weight

Some of the kilos lost in summer are simply water. The consumption of beer, ice cream, melon, watermelon, and rice dishes—all carbohydrates—causes the body to retain fluids. Thus, it is entirely possible to gain seven kilos in a month, but a significant part of that accumulation is water. In this specific case, the protagonist confessed to two liter tubs of chocolate ice cream per week. That amounts to about 2,000 extra calories weekly from ice cream alone, not counting cured meats and other summer excesses.

Diet vs. Exercise: What Experience Teaches

The only strategy that works in the long term is counting calories: eating slightly less than you burn each day, without starving, slowly but surely. A small daily deficit is the best trick because the body adapts and there is no rebound. In contrast, restrictive diets lasting two months, like the one involving swimming and walking, are unsustainable. Furthermore, the quality of what is eaten matters more than the quantity: if you eat healthily—lentils, oats, fruit, vegetables, chicken, fish—it is difficult to gain seven kilos in a month, no matter how much you eat.

Age and Muscle Mass: The Forgotten Factor

At 54, metabolism is no longer that of a twenty-year-old. Strength training, using heavy weights and few repetitions, is key to maintaining muscle mass, which acts as a metabolic reserve against diseases and surgeries. Developed muscle reduces fragility and chronic inflammation. However, inactivity and smoking play against you: smoking suppresses appetite but also destroys muscle and health. The combination of age, sedentary lifestyle, and bad habits is a vicious cycle.

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The striking fact: if you look at the overall balance of summer, only one kilo has been gained since June 1st. All the effort of the 'Bikini Operation,' all the suffering of restriction, only to end up exactly where you started, but with a month of excesses in between. The body does not forgive, but it does not surrender either.