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.
Cancer has many factors that causes excessive fatigue, such as: weight loss, breakdown of the tissues with release of energy, hormonal imbalances, depression and anxiety, which by themselves can cause fatigue, sleep disruption can also lead to sleepiness and fatigue, cancer treatments, such as radiation and chemotherapy can also cause extreme fatigue.