Which group of soldiers is at higher risk for heat injuries during training?

The group of soldiers at higher risk for heat injuries during training is overweight soldiers and those who are already dehydrated. This is because these factors significantly impair the body's ability to regulate temperature and cope with heat stress.

Overweight soldiers often have a greater body mass, which can increase the heat generated during physical exertion and hinder effective cooling through sweating. Dehydration exacerbates this risk by diminishing the body's ability to sweat, thus reducing cooling mechanisms. When the body is already in a dehydrated state, it cannot effectively manage heat load, leading to a higher likelihood of heat-related illnesses such as heat exhaustion or heat stroke.

Understanding the physiological impacts of dehydration and extra body weight sheds light on the critical need for hydration and weight management, especially when engaging in physically demanding activities in warm environments.