You accidentally step in a puddle of icy water. What should you do as soon as possible?

Changing into dry clothing is the most appropriate action to take after stepping in a puddle of icy water. This response addresses the immediate concern of hypothermia or chilling, which can occur when the body is exposed to cold, wet conditions. Wet clothing can significantly reduce body temperature, especially in cold environments, leading to serious health risks.

By changing into dry clothing, you can prevent the body from losing heat more rapidly, thereby maintaining your core temperature and reducing the risk of thermal stress or hypothermia. This action is part of proper personal safety and health management in a potentially hazardous environment, especially in scenarios occurring in colder conditions where exposure to icy water can have immediate health implications.

Immediate action is critical in such situations, and while other responses like calling for help might become necessary in severe cases, prioritizing warmth and dryness is pivotal for personal safety at the onset of exposure.