运动后过量氧耗（英语：Excess post-exercise oxygen consumption，简称为EPOC，非正式称为后燃烧）是身体在剧烈运动后为了偿还“氧亏”（英语：oxygen deficit）而产生的氧气摄入速率显着增加。在运动生理学发展历程中，“氧债”（英语：oxygen debt）这一术语普遍被用于解释或是一种尝试定量无氧供能消耗的指标，特别是particularly as regards 乳酸/乳酸盐代谢；事实上，the term "oxygen debt" is still widely used to this day. However, direct and indirect 热量计 experiments have definitively disproven any association of lactate metabolism as causal to an elevated oxygen uptake.

Excess post-exercise oxygen consumption (EPOC, informally called afterburn) is a measurably increased rate of oxygen intake following strenuous activity intended to erase the body's "oxygen deficit". In historical context the term "oxygen debt" was popularized to explain or perhaps attempt to quantify anaerobic energy expenditure, particularly as regards lactic acid/lactate metabolism; in fact, the term "oxygen debt" is still widely used to this day. However, direct and indirect calorimeter experiments have definitively disproven any association of lactate metabolism as causal to an elevated oxygen uptake.