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Calories are a measurement of the energy stored in the bonds between the atoms of each molecule of carbohydrates, fats, and proteins. While calories are essential for building muscle, they are not directly converted into muscle. Instead, they provide the energy required for muscle-building processes in the body. The body utilises protein and amino acids from dietary sources to build muscle mass. A calorie surplus can support muscle growth by providing the energy needed for these processes, but it is important to note that not all surplus calories are used for muscle building, as some may be stored as fat. Additionally, the effectiveness of calorie intake for muscle growth depends on individual factors such as starting body composition, gender, diet, and training level.
| Characteristics | Values |
|---|---|
| Calories turned into muscle | It is a myth that calories turn into muscle. Calories are a measurement of energy, not a concrete thing. |
| Muscle-building | Muscle is built from a diet high in dietary nitrogen, mostly found in protein-rich foods. |
| Calories and weight gain | Weight gain is driven by eating more calories than your body burns. |
| Calories and weight loss | To lose weight, you must achieve a calorie deficit by eating fewer calories than your body needs daily. |
| Calories and fat loss | A calorie deficit can lead to a rapid loss of muscle mass as the body breaks down muscle to be used as an emergency fuel source. |
| Calories and muscle loss | A large calorie deficit can lead to muscle loss. |
| Calories and muscle preservation | To preserve muscle mass, it is recommended to engage in strength training and eat a protein-rich diet. |
| Calories and muscle-building | Surplus calories can support the energy required to build muscle. |
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What You'll Learn
Calories are a measurement of energy, not a concrete thing
Calories are a unit of energy, specifically, they are a measurement of the energy stored in the bonds between the atoms of each molecule of carbohydrates, fats, and proteins. This energy is released when these molecules are broken down, or burned.
Calories are not a concrete thing that can be turned into muscle. Muscle is built from protein and amino acids, which are derived from food. To build muscle, it is important to eat a diet rich in protein and amino acids, and to engage in strength training. While it is a common belief that a surplus of 3,500 calories leads to a gain of one pound of fat, this does not apply to muscle. This is because muscle is not built from fat or carbohydrates, and so a surplus of calories will not lead to muscle gain.
When in a calorie deficit, the body will break down fat and muscle to be used as energy. However, a large calorie deficit can lead to rapid muscle loss, as the body will break down muscle to be used as an emergency fuel source. Therefore, it is recommended to maintain a moderate calorie deficit of around 500 calories per day to preserve muscle mass while losing weight.
To build muscle, it is important to consume a sufficient amount of protein and amino acids, and to engage in strength training. While calories are important to fuel the process of building muscle, they are not directly turned into muscle. Instead, the body uses the energy from calories to support the muscle-building process.
In summary, calories are a measurement of energy and are not turned into muscle. Muscle is built from protein and amino acids, and calories provide the energy needed for the muscle-building process. To effectively build muscle, it is important to consume a diet rich in protein and amino acids, engage in strength training, and maintain a moderate calorie surplus.
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To build muscle, you need protein and amino acids
Calories are a measurement of the energy stored in the bonds between the atoms of molecules of carbohydrates, fats, and proteins. While having surplus calories can support the energy your body needs to build muscle, they do not directly turn into muscle.
To build muscle, your body needs the right building blocks, such as protein and amino acids, as well as enough energy to fuel the process. A diet high in dietary nitrogen, found in protein-rich foods, is essential for building muscle. This is because protein from food is broken down and converted into amino acids, which are the fundamental building blocks of proteins and play a crucial role in muscle growth and repair.
There are 20 amino acids required for the body to function correctly, and nine of these are essential amino acids, meaning they must be obtained through food. Essential amino acids can be found in a variety of foods, including beef, eggs, and dairy. Leucine, an essential amino acid, has been found to be a key regulator of the mammalian target of rapamycin (mTOR) signaling pathway, which is a central regulator of muscle protein synthesis.
Additionally, the anabolic response of skeletal muscle to resistance training is significantly influenced by the availability of essential amino acids, particularly leucine and branched-chain amino acids. Proper supplementation of essential amino acids has been shown to enhance net protein balance, promoting muscle anabolism and mitigating muscle wasting.
Therefore, to build muscle effectively, it is crucial to focus on consuming adequate amounts of protein and essential amino acids, such as leucine, through a balanced diet that includes a variety of protein-rich foods.
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Fat and muscle have different cellular makeups
Calories are a measurement of the energy stored in the bonds between every atom of each molecule of carbohydrates, fats, and proteins. This energy is derived from the bonds between particles with mass, not the mass itself. When you consume more calories than your body requires, the surplus energy is typically converted into fat. However, it is a myth that fat can be turned into muscle or vice versa. This is because fat and muscle have distinct cellular makeups, making it physiologically impossible to convert one into the other.
Fat and muscle tissues have fundamentally different cellular compositions. Fat serves as an energy reserve in the body, playing a crucial role in regulating glucose and cholesterol levels and contributing to immunity. While fat is often vilified, it is essential for the body's regular functions. On the other hand, muscle is denser and more metabolically active, requiring more calories than fat, even at rest. This contributes to a "faster metabolism."
To lose weight, one must achieve a calorie deficit by expending more calories through physical activity than are consumed through the diet. However, it is important to note that a too-large calorie deficit can lead to rapid muscle mass loss, as the body will break down muscle tissue for emergency fuel. Therefore, it is recommended to maintain a moderate deficit of around 500 calories or 10-20% of your daily needs. During a moderate calorie deficit, body fat is used as fuel, and triglycerides stored in fat cells are broken down to produce adenosine triphosphate (ATP), the body's primary energy source.
To preserve muscle mass while losing weight, it is crucial to engage in strength training and consume a diet rich in protein. Protein provides the amino acids necessary for muscle building and maintenance. Additionally, incorporating cardiovascular exercises, such as walking, running, or biking, can further enhance weight loss and support overall health.
In summary, while calories are essential for providing the body with energy, they do not directly turn into muscle. Fat and muscle have distinct cellular structures, and weight loss or gain is a complex interplay between these two tissues, influenced by diet, exercise, and other lifestyle factors.
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A calorie deficit can lead to muscle mass loss
Weight loss is often a combination of losing fat, muscle, and glycogen stores. While it is possible to build muscle in a calorie deficit, a large calorie deficit can lead to rapid muscle mass loss. This is because the body will break down muscle to be used as an emergency fuel source.
To lose weight, you must achieve a calorie deficit by eating fewer calories than your body needs daily, increasing physical activity to burn calories, or a combination of both. However, too large a calorie deficit can be detrimental to muscle mass retention. During a moderate calorie deficit, body fat is used as fuel to support the body's regular functions. A moderate deficit of around 500 calories, or 10–20% of your total calorie needs per day, is recommended to avoid losing muscle mass.
To preserve muscle mass during weight loss, it is recommended to engage in strength training at least 2–3 times per week and eat a protein-rich diet. Eating enough protein is essential, with most people aiming for 0.6–0.9 grams of protein per pound (1.4–2.0 grams per kg) of body weight daily, or around 20–40 grams of protein per meal. Additionally, sustainable fat loss while preserving muscle includes consuming a moderate calorie deficit, adequate protein, and engaging in both cardio and strength training 5–7 days per week.
Research has shown that resistance training has a muscle-sparing effect during weight loss. In a study of 249 people, resistance training was found to have a better effect on fat loss than cardiovascular exercise due to its preservation of muscle mass. Furthermore, a study published in the Journal of Sport Nutrition and Exercise Metabolism found that losses of body mass should not exceed 0.7% per week to ensure muscle retention and gain.
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Lean muscle mass can help maintain fat loss
Calories are a measurement of the energy stored in the bonds between the atoms of each molecule of carbohydrates, fats, and proteins. This energy is released when these molecules are broken down or "burned". This energy is not stored in the mass itself but in the bonds between the particles that have mass.
To lose weight, one must achieve a calorie deficit by eating fewer calories than their body needs daily, increasing physical activity to burn calories, or a combination of both. However, too large a calorie deficit can lead to a rapid loss of muscle mass, as the body will break down muscle to be used as an emergency fuel source. Thus, a moderate deficit of around 500 calories, or 10–20% of one's total calorie needs per day, is recommended. During a moderate calorie deficit, body fat is used as fuel to support the body's regular functions. Triglycerides stored in fat cells are broken down and sent to the mitochondria to produce adenosine triphosphate (ATP), the body's main source of energy.
Additionally, incorporating more protein supports fat loss efforts as it helps one feel full, even when their overall calorie intake is lower than normal. It is recommended to get at least 3 grams of protein per kilogram (2 pounds) of body weight. However, one's optimal protein intake will vary depending on their age, calorie intake, and current body weight.
To maintain muscle during weight loss, it is recommended to engage in strength training at least 2–3 times a week. Sustainable fat loss while preserving muscle includes eating at a moderate calorie deficit, consuming adequate protein, and engaging in both cardio (aerobic) exercise and strength training 5–7 days a week.
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Frequently asked questions
Calories are a measurement of energy, so your body doesn't turn calories into muscle. To build muscle, your body uses protein and amino acids from the food you eat.
Calories provide the energy required to build new muscle. Eating more calories than your body burns can help you gain weight and build muscle. However, it is important to note that the number of calories needed to build muscle varies from person to person.
To gain muscle without excessive fat gain, it is recommended to eat a diet rich in protein and amino acids, and to engage in strength training and cardio exercises.
