Excess post-exercise oxygen consumption Excess post-exercise oxygen consumption Excess post-exercise oxygen consumption (EPOC, informally called afterburn) is a measurably increased rate of oxygen intake following strenuous activity. In historical contexts 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. In recovery, oxygen (EPOC) is used in the processes that restore the body to a resting state and
Liquid oxygen (supplement) the Federal Trade Commission fined the manufacturer for making false statements claiming health benefits resulting from the use of the product. The manufacturer had claimed that taking the supplement had beneficial effects on a wide variety of ailments, including angina, anaemia, and various forms of cancer, and that it also increased vigor and provided for a more positive state of mind. The company states that Vitamin O is "a special supplemented oxygen taken in liquid form and produced through electrical-activation with a saline solution from the ocean," and that the substance increases the amount of oxygen present in the blood.