Counting Steps to Find the One Who Doesn't Want to Run: Lessons from Movement Data

The training ground was so quiet that I could hear the sound of shoes scraping against the asphalt. It was a July morning in Ho Chi Minh City, where I stood watching a training session of the national youth athletics team. A 400m runner was doing a variable-speed run. I wasn't looking at the stopwatch. I was counting his steps. On the third lap, his stride began to drag, the distance between steps shortened, and his upper body leaned forward more than usual. GPS data later confirmed what I had seen: speed dropped 7%, but heart rate remained at 178 beats per minute. He wasn't slowing down because of a lack of fitness. He was slowing down because he didn't want to run anymore. I have been following Vietnamese athletics since 2026, when I was a young reporter in Australia before moving to Saigon. Thirty years of observing tracks from Southeast Asia to the World Cup has taught me one thing: the human body cannot lie. Words can hide, expressions can be performed, but the running stride always tells the truth. An athlete who is mentally exhausted will never maintain a proper stride rhythm, no matter how hard they have trained. This lesson doesn't only apply to athletics. It applies to every sport, from football to martial arts. At the 2026 World Cup, I was sent to Russia to cover the tournament. In the semi-final between Croatia and England, I followed the GPS data of Luka Modric. He ran 12.4 km, with 11 sprints above 25 km/h – an unusually high number compared to the 9.8 km average of the English midfielders. People see Modric pass the ball; I see him plant his heel like a tank tread into the grass. That stability is not accidental. It comes from knowing how to distribute energy, when to sprint and when to conserve. Modric is not fast, not flashy, but indispensable. Back to Vietnamese athletics, I notice a bigger problem: we are romanticizing load management. Coaches often talk about "adjusting volume" as a scientific strategy, but in reality, it's often a way to make room for commercial tournaments and friendlies. I have seen too many young talents burned out before age 25 because they were pushed into dense competition schedules without real recovery time. Data never shouts, but it will repeat itself until you are willing to listen. In 2026, when I was 37, a 9x editor criticized my article about SEA Games 2026 as "dry as a tile." Instead of arguing, I dusted off my Statistics degree, collected data from 232 Southeast Asian track and field athletes, and built a speed matrix by distance. I discovered Nguyen Thi Oanh increased 0.8 m/s in the final lap of the 1,500m to win gold – a number never explored before. The 5-part series "The Track Is Not Just Numbers" increased the newspaper's traffic by 18%. From then on, I set a principle: no data, no writing. But data has its limits. The empty stadium in 2026 was a laboratory: there was no cheering to hide in, and the truth became very bare. When the pandemic forced stadiums to close, I couldn't go to the venues. While colleagues wrote nostalgic pieces, I built an emergency protocol: I listed 73 international athletics events postponed, divided them among 5 contributors, and required cross-checking of all data before 2 PM daily. One contributor made a 0.02-second error in the results table of a Kenyan athlete; I made him rewrite the entire file because "an error is an error." Three layers of checking are not to find the truth, but to calculate how many times the truth can survive distortion. That protocol helped me publish a steady series of post-lockdown performance predictions, building professional credibility. But it also made me realize something important: data only has value when we know how to read it in context. An athlete running 0.5 seconds slower could be a sign of injury, or it could just be a headwind. A player running 1 km less than average could be tactical, not laziness. I remember an afternoon at the National Sports Training Center in Ho Chi Minh City, watching a group of young athletes doing repeated 200m runs. A 17-year-old boy, tall, with beautiful stride mechanics. But on the fourth rep, I saw him start looking at the clock in the corner of the field. Not to check time, but to count how many more reps remained. That's a sign of boredom, not fatigue. I asked the coach: "Does he like running?" The coach was surprised: "How do you know? He's considering leaving the team to go to university." Athletics taught me: the track has no room for excuses. But it also taught me that sometimes, the one who doesn't want to run is not lazy. They might be exhausted from being pushed too far, too fast, with no one listening to the voice of their body. A tank tread never stands out in a photo, but it determines which mud pits the vehicle can cross. Similarly, the small details in a running stride, in heel placement, in breathing rhythm – they never appear on the results sheet, but they determine how far an athlete can go. The current transfer window is noisy with rumors about Vietnamese football clubs recruiting foreign players. But I want to tell sporting directors: don't just look at goal or assist statistics. Watch how that player moves when his team is losing. Watch whether he maintains his stride rhythm at minute 85. Watch whether he tracks back when the ball is lost. Every step is an answer. Players don't need interviews. I have lived in Vietnam for nearly three decades. I have witnessed the growth of national sports from the early days of scarcity to now, when we can be proud of international achievements. But I still hold one principle: cautious with probability. Nothing is absolutely certain in sports. An athlete can be at peak form today, but tomorrow, a minor injury can change everything. That's why I always tell young colleagues: write with data, but never forget that behind every number is a human being with their own limits. The question I always ask when analyzing an athlete is not "How fast can he run?" but "Does he want to run fast?" And the answer, I believe, always lies in their steps. I count every step to find the one who doesn't want to run. And when I find them, I don't judge. I just ask the next question: why?