Which factor does NOT contribute to heat injuries?

The factor that does not contribute to heat injuries is a cold environment. Heat injuries typically occur when an individual is exposed to high temperatures, leading to conditions such as heat exhaustion or heat cramps. A cold environment, on the other hand, poses a risk of hypothermia and other cold-related injuries rather than heat-related ones.

Dehydration significantly contributes to heat injuries because it reduces the body’s ability to cool itself through sweating. Heat cramps and heat exhaustion are direct manifestations of overheating and can result from prolonged exposure to high temperatures, especially in combination with dehydration. Thus, a cold environment stands out as the only factor listed that does not lead to heat injuries, reinforcing the understanding that heat-related conditions occur due to heat exposure and not cold.