09/05/2026
EVER WONDERED HOW CALORIES ARE ACTUALLY CALCULATED? 🤔
A calorie is simply a unit of energy — the energy your body gets from food.
Years ago, scientists measured calories by literally burning food in a machine called a bomb calorimeter 🔥
The heat released showed how much energy the food contained.
Nowadays, food labels use standard values:
• Carbohydrates = 4 calories per gram
• Protein = 4 calories per gram
• Fat = 9 calories per gram
• Alcohol = 7 calories per gram
So if a snack contains:
✔️ 10g protein
✔️ 20g carbs
✔️ 5g fat
The calorie total would be:
(10×4) + (20×4) + (5×9) = 165 calories 🍎
But calories OUT matter just as much as calories IN.
Your body burns energy through:
🫀 Resting Metabolic Rate (RMR)
The calories your body uses just to keep you alive — breathing, heartbeat, brain function, hormone production and more. This is usually the biggest part of your daily calorie burn.
🚶 NEAT (Non-Exercise Activity Thermogenesis)
All the movement you do outside the gym — walking, cleaning, shopping, standing, fidgeting, taking the stairs. This can vary massively from person to person.
🏋️ Exercise
Training, cardio, sports, weight lifting.
🍗 Digestion (Thermic Effect of Food)
Your body even burns calories digesting and processing food.
This is why calorie burn is never exactly the same day to day.
Movement, sleep, stress levels, muscle mass and lifestyle all play a role.
That’s also why, you should focus on keeping things simple and sustainable rather than obsessively tracking every calorie 🙌🏼
Calories can be a useful guide — but they’re not an exact science.
Hope this helped give you a better understanding 👊🏼
Have a great weekend x
I'm now going to walk this little fella.