Define the Physical activity level?
Physical activity level (PAL) is defined as the total energy required over 24 hours divided by the energy needed for basal metabolism over 24 hours. In simple terms, TEE for 24 hours expressed as a multiple of BMR, and calculated as TEE/BMR for 24 hours. In adult men and non-pregnant, non-lactating women, BMR multiplied by PAL is equal to TEE or the daily energy requirement.