The lactate threshold (LT) (or lactate inflection point (LIP) or anaerobic threshold (AT)) is the exercise intensity at which lactate (more specifically, lactic acid) starts to accumulate in the blood stream.
The third largest country of the world, the United States of America is located in North America between Mexico and Canada.he states of Alaska and Hawaii Islands are the only two states not sharing contiguous boundaries with the country. Alaska is situated to the northwest side of North America sharing its border with the neighboring country of Canada and Hawaii Island is an archipelago in the Pacific Ocean.
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait.