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Signs of physical and emotional exhaustion: 1  Chronic fatigue. 2  Insomnia. 3  Forgetfulness/impaired concentration and attention. 4  Physical symptoms. 5  Increased illness. 6  Loss of appetite. 7  Anxiety. 8  Depression. 9  Anger.
Heat exhaustion is the body's response to loss of water and salt from heavy sweating. Signs include headache, nausea, dizziness, weakness, irritability, thirst, and heavy sweating. Heat cramps are caused by the loss of body salts and fluid during sweating. Low salt levels in muscles cause painful cramps. Tired musclesâthose used for performing the workâare usually the ones most affected by cramps.