burn something off/up
phrasal verb with burn verb uk/bɜːn/ us/bɝːn/ burnt or burned | burnt or burned
B2 （通过大量体育锻炼）消耗（能量或脂肪）
to use or get rid of energy or fat by doing a lot of physical exercise
Running is an excellent way to burn off excess calories. 跑步是消耗多余热量的极好办法。