What is the purpose of tightening the straps on the anti-exposure coveralls before entering the water?

Tightening the straps on the anti-exposure coveralls before entering the water is essential for securing a proper fit and preventing water entry. A snug fit ensures that the coveralls perform effectively by minimizing the amount of water that can seep in, which is crucial for maintaining body warmth and safety in cold water environments. This fit also helps to reduce drag and resistance when moving through the water, thus enhancing the effectiveness of the coveralls in providing essential thermal protection. A loose fit could allow water to enter the coveralls, negating their purpose and increasing the risk of hypothermia in cold conditions. Properly adjusted straps are vital to ensure the coveralls function as intended, providing the wearer with the necessary protection while in the water.