Glycolysis involved in glycolysis. The burning sensation in muscles during hard exercise can be attributed to the release of hydrogen ions during the shift to glucose fermentation from glucose oxidation to carbon dioxide and water, when aerobic metabolism can no longer keep pace with the energy demands of the muscles. These hydrogen ions form a part of lactic acid. The body falls back on this less efficient but faster method of producing ATP under low oxygen conditions. This is thought to have been the primary means of energy production in earlier organisms before oxygen reached high concentrations in the atmosphere between
Kegel exercise to consumers as improving sex or orgasms, increasing "energy", "balancing hormones", and as having other health or lifestyle benefits. There is no evidence for any of these claims, and many of them are pseudoscience. Kegel exercise Kegel exercise, also known as pelvic floor exercise, consists of repeatedly contracting and relaxing the muscles that form part of the pelvic floor, now sometimes colloquially referred to as the "Kegel muscles". The exercise can be performed multiple times each day, for several minutes at a time, for one to three months, to begin to have an effect. Kegel exercises can make the pelvic