Farting does not burn a significant amount of calories. In fact, farting is a passive process where the muscles relax to release gas, so it does not involve muscle contraction needed to burn calories. Any calorie burn from straining to fart would be extremely minimal, approximately 1-2 calories at most, which is negligible for weight loss or calorie expenditure purposes. Most calorie burning related to digestion comes from the overall digestive process, not the act of farting itself. The feeling of lightness after farting is due to the release of gas and reduction of bloating, not because calories were burned. Thus, farting cannot be considered a way to burn calories or lose weight.