In 1979, Pol Pot and the Khmer Rouge were forced from power by the invading Vietnamese. Pol Pot officially resigned the leadership in 1985 but appears to have retained considerable influence.
Muscle fatigue. Muscle fatigue is the decline in ability of a muscle to generate force. It can be a result of vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction.
Causes of Extreme Fatigue. The Most Common Reasons for Excessive Fatigue. Discovering the causes of extreme fatigue can be difficult if you don't know the distinctions between fatigue and sleepiness. Some disorders cause fatigue, others sleepiness, and some disorders cause a mix of these two. The question is: Are you tired, sleepy, or fatigue? In this page you will learn: 1  What is extreme fatigue, compared to sleepiness and tiredness, 2  What causes extreme fatigue, including most common disorders and medication, 3  Useful questionnaire to test your excessive fatigue, 4  How to stop fatigue in a sleep apnea patient.