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.
Fatigue Cause No. 5: Depression. You may think of depression as an emotional disorder, but it contributes to many physical symptoms as well. Fatigue, headaches, and loss of appetite are among the most common symptoms. If you feel tired and down for more than a few weeks, see your doctor.atigue Cause No. 4: Anemia. Anemia is one of the leading causes of fatigue in women. Menstrual blood loss can cause an iron deficiency, putting women at risk. Red blood cells (shown here) are needed because they carry oxygen to your tissues and organs.