24 hour fast has health benefits

Intermittent Fasting: How Many Calories Can You Burn with a 24-Hour Fast Once a Week?

calories burned fasting for 24 hours
You are going to be thinking of food. But calories burned fasting for 24 hours is going to make you stronger.

How Many Calories Do You Burn Fasting for 24-Hour Fast?

Ever wonder what happens if you stop eating for a day? You’re about to find out! In this article, we’ll explore the concept of a 24-hour period of not eating and its impact on your caloric burn rate.

You’ll learn how fasting may affect your metabolism, and what it could mean for your weight loss, body fat goals, and overall health. Don’t worry, we’ve got the facts you’ll need to understand it all.

Let’s take this hunger strike challenge together!

Understanding Basic Metabolism

To kick off your understanding of basic metabolism, you’ve got to know that it’s the process where your body breaks down what you eat and drink into energy. During this biochemical process, caloric intake of food and drink are combined with oxygen to release the energy your body needs to function.

Even when you’re at rest, your body needs energy for all its ‘hidden’ functions, such as breathing, circulating blood, adjusting hormone levels, and growing and repairing cells. The number of calories your body uses to carry out these basic functions is known as your basal metabolic rate.

Understanding your metabolism can help you make healthier decisions about your diet and physical activity levels. Remember, you’re in control of your body’s energy production.

Calories, Fast For A Day, Shed Those Pounds Once-A-Week

Calories burned fasting for 24 hour is dependent on the individual.
24 hour fast can be difficult, the calories burned fasting for 24 hours is worth it!

Now that you’ve got a grasp on basic metabolism, let’s delve into how fasting plays a role in calorie burning.

When you’re eating, your body stores excess calories as fat for later use. During intermittent fasting, it’s this fat that’s targeted. Your body begins, in its quest for energy, turns to these fat reserves and glycogen stores, depletes them down and burning calories (oxidize) in the process, fat-burning or fat for energy.

It’s akin to your body going into ‘power-saving’ mode, where it’s more careful with how it uses energy. Fasting doesn’t just burn calories, it also helps improve your metabolic state, contributes to weight loss, insulin sensitivity over time.

However, it’s crucial to remember that while fasting can aid in a calorie deficit, it isn’t a magic bullet solution. It should be used responsibly, alongside regular exercise and a balanced diet, for optimum health.

24-Hour Fast: What Happens On One Day Fasting?

Often, when you embark on a 24 hours once a week intermittent fast, your body initially reacts by going into a state of shock. It’s not used to this sudden change and it’s scrambling to adapt. Your metabolism slows down to conserve energy, which is why you may feel tired and sluggish.

Your body starts burning fat for fuel (fat burning lipids), leading to weight loss. But it’s not just fat that’s being utilized. Your body doesn’t discriminate when it’s in survival mode – you’re actually taping into your muscle stores for energy. This is why extended fasting can lead to muscle loss.

You’ll likely experience hunger pangs, but these usually subside after the first few hours. By the end of the strike, you’ll probably feel a sense of accomplishment and a renewed appreciation for food.

How Many Calories Do You Burn Fasting One Day A Week?

Math involved with calories burned fasting for 24 hours
There is some math to figure out when trying to find calories burned fasting for 24 hours. BMR Calculator.

Calculating your number of calories burned during a 24-hour fast involves understanding how your body’s metabolism adjusts to the absence of food. Essentially, your metabolism is your body’s engine, and it doesn’t shut off, even when you’re not eating. It continues to burn calories to keep your heart beating, your lungs breathing, and your other organs functioning. This is your basal metabolic rate (BMR).

You can calculate your BMR using online calculators that consider your age, sex, body weight, and height. This will give you an approximation of the calories you’d burn in 24 hours without eating. Remember, this is a rough estimate. Everyone’s metabolism varies, and factors like muscle mass and physical activity level can influence your actual caloric burn rate.

Implications for Long-Term Weight Loss and Health

Embarking on a 24-hour food strike might seem like a quick weight-loss solution, but it’s important to suggest that fasting can potentially lead to health implications. Rapid weight loss can lead to muscle loss, nutritional deficiencies, and gallstones. Your body won’t get the nutrients it needs to function correctly, leading to fatigue, hair loss, and even heart problems.

Furthermore, starving yourself isn’t a sustainable way to lose weight. You’ll likely regain the lost weight once you start eating normally again. It’s better to adopt a balanced diet and regular exercise regime. This approach promotes a healthy weight loss, without risking your well-being.

It’s recommended to consult with your doctor. If you have an underlying medical condition or have an adverse relationship with food, a fasting regimen may not be in your best interest. 


So, you’ve now grasped how your metabolism, fasting, and 24-hour fasts can reduce calorie burn rate. It’s clear that your body’s ability to burn calories doesn’t stop, even when you do.

It’s a complex process with significant implications for your weight loss and overall health. Remember, while a short term fasting period can boost your metabolic rate, it’s crucial to approach it mindfully for the sake of your health.

Remember, being consistent is taking one step forward.


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The 24 Hour Fast: benefits and how to – Dr. Robert Kiltz. (2023, April 19). Dr. Robert Kiltz. https://www.doctorkiltz.com/24-hour-fast/


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