Basal Metabolic Rate (BMR) shine mafi ƙarancin adadin kuzari ko adadin kuzari da mutum ke buƙata don kula da ainihin ayyukan jiki kamar numfashi, wurare dabam dabam, da aikin gabbai yayin da yake hutawa. A wasu kalmomi, shine adadin kuzarin da jiki ke kashewa a cikin cikakken hutu, don kiyaye muhimman ayyukansa. BMR ya bambanta dangane da abubuwa daban-daban, kamar shekaru, jinsi, nauyi, tsayi, da tsarin jiki. Yawancin lokaci ana auna shi da adadin kuzari kowace rana ko awa daya.