Which process helps the body retain heat?

Shivering is a physiological response that generates heat in the body. When the body is exposed to cold temperatures, the muscles contract and relax rapidly, which produces warmth as a byproduct of muscle activity. This involuntary response is particularly important for maintaining core body temperature in cold conditions, thereby helping the body conserve heat.

In contrast, sweating is a mechanism used by the body to cool down when overheated, not to retain heat. Vasodilation involves the widening of blood vessels, which increases blood flow to the skin's surface, promoting heat loss rather than retention. Heat dissipation refers to the various methods the body uses to release excess heat, such as through radiation, conduction, convection, and evaporation. Thus, shivering is the primary process that helps the body retain heat in cold environments.