What is a common misconception about EVA foam in running shoes?

The belief that running shoes need 24–48 hours to "decompress" before use is a misconception because EVA foam is designed for immediate use once the shoes are manufactured and distributed. In reality, EVA foam does not require a waiting period to recover its shape; it is designed to provide cushioning and support right away. The foam's ability to compress and decompress during runs is a normal part of its functionality. Compression and decompression occur each time the shoes are worn, meaning they are ready for use straight out of the box.

While the other options touch on aspects of EVA foam and its applications in running shoes, they do not reflect the same level of misunderstanding about the material's immediate usability as the idea of "decompression" does. Thus, recognizing that EVA foam does not need an extended period to regain its characteristics helps runners and coaches understand that they can begin using their new shoes without delay, ensuring that they experience optimal performance and comfort from the outset.