In fact, the most common occurrence in marathons is the “wall collision” phenomenon (also known as the “wall collision period”), which is a comprehensive manifestation of multiple physical, neurological, and metabolic system breakdowns, usually occurring after 30 kilometers of race.
At this point, runners may suddenly feel heavy on their legs, have difficulty breathing, lose focus, and even have strong thoughts of withdrawing from the race.
The core mechanism and response strategies are as follows:.