How many calories do I burn while I am fasting (for 15 hours)?

It's impossible to give an exact number of calories burned while fasting for 15 hours because it depends on several factors, including:

• Basal Metabolic Rate (BMR): This is the number of calories your body burns at rest to maintain essential functions like breathing and circulation. BMR is influenced by factors like age, sex, height, and weight.
• Activity Level: Even during fasting, daily activities burn calories. The more active you are, the higher your calorie burn.
• Body Composition: Muscle burns more calories than fat, so people with more muscle mass will burn more calories while fasting.

However, fasting for 15 hours can definitely put your body into fat-burning mode. Here's a general idea:

• Your body first burns through easily accessible energy sources like glucose from food.
• After a while (around 10-16 hours of fasting), your body starts switching to burning stored fat for energy.

If you're interested in learning more about calorie burning during fasting, you can search for "basal metabolic rate calculator" or "calories burned fasting" to find online tools that can give you a personalized estimate.

Here are some additional points to consider:

• Fasting is not a magic bullet for weight loss. It's important to maintain a healthy overall diet.
• If you're new to fasting, it's wise to start with shorter durations and consult with a doctor before making significant changes to your diet.

 

The number of calories burned during fasting can vary depending on factors such as your weight, age, gender, metabolism, and activity level.

During a fast, your body primarily uses stored energy from glycogen (stored carbohydrates) and then shifts to burning fat for fuel. The number of calories burned during fasting can be estimated based on your basal metabolic rate (BMR), which is the number of calories your body needs to maintain basic functions at rest.

On average, a person burns about 50 to 100 calories per hour at rest. Therefore, during a 15-hour fasting period, you might burn roughly 750 to 1500 calories. However, this is a very rough estimate and actual calorie expenditure can vary significantly from person to person. Additionally, if you are engaging in any physical activity during the fasting period, you would burn more calories.

It's important to note that fasting should be approached with caution and ideally under the guidance of a healthcare professional, especially if done for an extended period or if you have any underlying health conditions.

 

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