Does Farting Burn Calories? Here’s the Truth

You might have heard someone joke about burning calories by farting and wondered if there’s any truth to it. Let’s dive right into this intriguing question and separate fact from fiction.

What Happens When You Fart?

Farting, or flatulence, is the process of releasing gas from the digestive system through the anus. It’s a natural, healthy part of digestion that indicates your digestive system is working as it should. These gases are primarily composed of odorless vapors like carbon dioxide, oxygen, nitrogen, hydrogen, and sometimes methane.

The Calorie Burning Myth

Now, regarding the burning of calories: when you fart, your muscles contract. However, the energy used in this process is minimal. Farting is an involuntary action that doesn’t require significant effort from our body. It’s not like running or swimming, where you exert a lot of energy and, therefore, burn calories.

The Reality of Burning Calories

Calorie burning is primarily tied to activities that raise your heart rate and require energy expenditure. Examples include exercise, walking, or even tasks like cleaning your house. Metabolic processes, where your body converts food into energy, also burn calories but in a more passive way.

The Role of Digestion

While digestion itself burns calories, this process is more about breaking down food and absorbing nutrients rather than the act of releasing gas. The energy used for digestion, known as the thermic effect of food, is part of your basal metabolic rate. This is the rate at which you burn calories while at rest to maintain vital bodily functions.


In short, while farting is a sign of a working digestive system, it’s not a significant calorie-burning activity. To effectively burn calories, focus on regular exercise and maintaining a healthy metabolism through a balanced diet. Remember, staying active and eating well are the keys to burning calories, not the occasional release of gas!

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