Daily Calorie Intake: A Step-by-Step Guide

Many people already know that managing weight requires keeping track of calories, but a logical question arises: what should you do after calculating your daily calorie needs? In this article, we will discuss how to adjust your daily intake based on energy expenditure and changes in your body.

What are calories?

A calorie is a unit of energy. When you eat or drink, your body receives energy, which is used to perform numerous functions, including:

  • Basal metabolic rate: supporting internal organs, breathing, heartbeat, and maintaining body temperature.
  • Physical activity: from walking to intense workouts.
  • Food digestion: the process where the body breaks down food and extracts nutrients.

Foods contain three main sources of calories:

  • Proteins (4 kcal per gram),
  • Fats (9 kcal per gram),
  • Carbohydrates (4 kcal per gram).

This energy is measured in kilocalories (kcal), and the term "calories" is often used as a synonym.

How many calories does an adult need?

There is no single answer to this question — the daily calorie intake your body needs depends on several factors:

  • Gender: men usually require more calories than women.
  • Age: calorie needs decrease with age due to slower metabolism.
  • Physical activity: active individuals burn more energy.
  • Individual characteristics.

There are several ways to calculate the daily calorie requirement for a specific person. For example, the Mifflin-St Jeor formula helps determine how much energy your body uses at rest (basal metabolic rate). This value is then multiplied by an activity factor to calculate your total daily calorie expenditure.

However, despite the precision of these calculations, they are only approximate figures. Formulas do not account for many factors that influence actual results.

How does the body react to a calorie deficit or surplus?

Calorie deficit

If you consume fewer calories than you burn, your body starts using its own tissues, including fat, as an energy source.

During a prolonged deficit, metabolism may slow down to "conserve" energy.

Important: a severe calorie shortage can negatively affect many body systems: hormonal, cardiovascular, nervous, and others. The deficit should be moderate.

Calorie surplus

If you consume more calories than you burn, the excess is stored as fat reserves.

The surplus refers to the part of the energy not spent on body functions, physical activity, muscle growth, and other needs.

How to monitor calorie intake to achieve your goal?

Now that we understand how the body responds to an energy deficit or surplus, we can control calorie intake to achieve a specific goal.

Important: the focus is on the average calorie intake, not the daily amount. For example, if you follow a strict diet for 9 days but overeat on the 10th, weight loss is unlikely.

A general action plan:

  1. Calculate your starting calorie intake on your own or using Tasty Balance. This service takes your goal into account and automatically creates the required calorie deficit or surplus.
  2. Weigh yourself every 1–2 weeks, preferably in the morning, on an empty stomach, and wearing the same clothes.
  3. Adjust calories no more than once every 2 weeks:
    • If weight hasn’t changed, adjust calorie intake by 100–150: increase for weight gain or decrease for weight loss.
    • If weight changes, make small calorie adjustments.

It is recommended to make changes by adjusting carbohydrates. You can lock the protein and fat amounts in the menu selection form by clicking the lock icon next to them, then change total calorie intake.

Remember: all food contains calories. For example, a teaspoon of sugar weighing 6 grams contains 24 kcal. Thus, four cups of coffee or tea with two teaspoons of sugar each add up to almost 200 kcal, potentially nullifying your calorie deficit. This doesn’t mean you have to give up coffee — just account for these calories in your diet.

Conclusion

Calorie adjustment is a dynamic process requiring regular monitoring and flexibility. By using Tasty Balance, you can efficiently manage your diet without losing sight of your goals. Approach the process with patience: steady changes are the key to long-term success.