Military training will find a lot of weak people often fainting, military training fainting causes are as follows: 1, military training fainting is due to heatstroke, generally military training due to long hours of training in the sun, will lead to too much heat production and insufficient heat dissipation, but also lead to the human body due to sweat loss bleeding electrolyte disorders and a series of symptoms. In this case, heat stroke can occur and cause the patient to faint. Once this happens, the patient should be sent to the hospital for treatment in time. 2, the reason for fainting during military training may also be caused by low blood sugar, because some training time is long some people will have low blood sugar, once the low blood sugar will lead to fainting, shock and other phenomena. 3, the reason for fainting during military training may also be due to excessive fatigue. Generally, the intensity of military training is very high, and often there will be physical overdraft and other situations, which will cause insufficient blood supply to the heart and brain and fainting.