Exercise physiology loss of integrity to the blood brain barrier. Hyperthermia also can lower cerebral blood flow, and raise brain temperature. Researchers once attributed fatigue to a build-up of lactic acid in muscles. However, this is no longer believed. Rather, lactate may stop muscle fatigue by keeping muscles fully responding to nerve signals. The available oxygen and energy supply, and disturbances of muscle ion homeostasis are the main factor determining exercise performance, at least during brief very intense exercise. Each muscle contraction involves an action potential that activates voltage sensors, and so releases Ca ions from the muscle fibre’s sarcoplasmic reticulum. The
This Is an Exercise review for Allmusic, Heather Phares called the album "a darker, more dramatic, and more polished affair than "All Your Faded Things"," also describing it as "just as fascinating as it is chilly and alienating. In her songs, Oxygen explores some of the same issues of authenticity, creation, and consumption that Tracy + the Plastics do, but with a sci-fi/fantasy bent." Phares gave the album 3.5/5 stars, also stating that "on "This Is an Exercise", Anna Oxygen excels at creating a unique, sometimes disturbing sonic world with an almost-palpable sense of atmosphere." This Is an Exercise This Is an Exercise is