One from the major human activities that leads for the irreversible biodiversity loss may be the overexploitation of certain animals. This occurs once the human destruction or using a species outpaces that species' ability to reproduce. This often occurs certain organisms are highly prized by humans, which could be the case with animals and plants whose parts are utilized as medicinal therapies in certain societies. Sadly, three in the Earth's eight type of tiger happen to be extinct. What's worse? The five remaining species are gravely endangered, partly due for the demand for their bones, which can be considered to treat arthritis, and erroneously believed to reverse male impotence. Exploitation also affects plants also including popular wild-grown medicines ' including Echinacea, the normal cold remedy. A cortisol blood test is carried out to discover the cortisol hormone level in the blood. Cortisol assists one's body in metabolic process and stress management. The levels of cortisol inside the blood may vary as a consequence of several factors like stress, infection, injury and strenuous activities. The levels of cortisol usually vary throughout the length of the afternoon. In the morning, it can be generally increased, at night and during sleep, its level is often low. Its level, however, may continue with the person's sleeping habits. Those who sleep within the daytime and therefore are awake during the night, might have reversed cortisol level patterns also. Ginseng