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.
Some causes of fatigue during cancer treatment include: 1  The cancer itself. Changes in your metabolism due to the cancer itself can drain your energy. 2  Treatment and side effects of treatment. Chemotherapy, radiation therapy, and surgery can all contribute to tiredness.