The simple rule of weight loss is well known: caloric deficit. If you burn more than you consume, you lose weight. But this highly simplified view ignores something crucial: gaining weight and performance stagnation often don't happen purely due to a surplus of calories, but due to a catastrophic macronutrient distribution.
The Calorie Paradox
Two people eat 2500 calories. Person A eats 150g protein, 300g complex carbs, and 75g fat. Person B eats 60g protein, 200g sugar, and 160g fat. Both consume the exact same number of calories, but after a few weeks, Person B will very likely have accumulated more body fat, feel lethargic, and stagnate in training. Why?
The Thermic Effect of Food (TEF)
Not every calorie is the same because your body has to expend different amounts of energy to process them.
ā¢ Fat: TEF of approx. 0-3%. Almost all dietary fat can be efficiently stored as body fat.
ā¢ Carbohydrates: TEF of 5-10%.
ā¢ Protein: TEF of 20-30%.
Those who cover their calories primarily with fats (like fast food, oils, or massive amounts of nuts) feed the body extremely highly concentrated energy that requires almost no metabolic effort to land on the hips.
De Novo Lipogenesis: Why Carbs Rarely Turn into Fat Immediately
An extremely persistent myth says that carbs "make you fat directly". Physiologically, however, this hardly ever happens. The conversion of carbohydrates into body fat (De Novo Lipogenesis) is a highly inefficient process for the body.
What happens instead when you eat carbs:
1. They fill your glycogen stores (liver and muscles).
2. They are burned directly as energy.
3. The Problem: If you consume a lot of dietary fat at the same time, the body burns the carbs while the dietary fat travels unchallenged directly into your fat depots.
This means: It's not the spaghetti making you fat, it's the extremely rich cream-oil sauce (fat) that you eat along with the carbs!
Why Fat Slows You Down in the Gym
When your calorie budget is heavily depleted by fats, you often lack the room for sufficient carbs and protein. Result:
1. Lack of Power: Fat is a slow energy source. For intense strength training (ATP and anaerobic system), your body needs glucose (from carbs). Without full glycogen stores, your performance drops.
2. Poor Recovery: Without enough protein (because calories went to fat), muscles cannot be repaired efficiently.
3. Lethargy: A very high-fat meal leads to digestive sluggishness. The "food coma" after a fast-food meal is real.
What a Sensible Distribution Looks Like
To go full throttle in training and avoid unnecessary fat accumulation, fat should be viewed as a "filler macro" after the critical building blocks are covered:
1. Protein: 1.6 - 2.2g per kg body weight (secures muscles and satiety)
2. Carbohydrates: The rest of your calories down to the lower fat limit (provides training energy)
3. Fat: Only 0.8 - 1.0g per kg body weight (perfectly sufficient for hormones and vitamins)
A very high-fat diet empties your calorie account rapidly, doesn't keep you full for long, and doesn't provide the "fuel" you need for maximum muscle contractions. So keep an eye not only on your calories but crucially on your fats too!