The expenditure of energy in activities other than exercise is known as non-exercise activity

thermogenesis

Explanation:

The thermogenic effect of food (or thermogenesis) refers to the amount of heat your body generates to digest the food you eat, accelerating your metabolism during the digestion period. That is, your body will burn calories by digesting the proteins, fats and carbohydrates you eat. In addition, the caloric energy used to digest each of the macronutrients is different. Your body will never absorb 100% of the total calories you consume through food.

To calculate the thermogenic effect of food approximately, in the first instance you will have to calculate your Basal Metabolism (1 Kcal x weight x 24 hours), for example: the Basal Metabolism of a runner weighing 55 Kg, would be 1,320 Kcal (1 x 55 x 24). Now you can calculate the Thermogenic Effect of Food, which is calculated by applying 10% to your Basal Metabolism rate, being 132 Kcal for this runner (10% of 1,320 Kcal).