Survival skills
A human being can survive an average of three to five days without the intake of water. The issues presented by the need for water dictate that unnecessary water loss by perspiration be avoided in survival situations. The need for water increases with exercise.
Khader Adnan
Almost two months into his hunger strike, it was reported that Adnan agreed to having electrolytes, vitamins, glucose, and salts added to the water he is drinking. His doctors noted that, "A fast in excess of 70 days does not permit survival. Infusion of liquids, adjustment of salts, and the addition of glucose and vitamin cannot prevent certain death due to such a protracted hunger strike."