Crime scene: 162 mystery solving puzzles to find out who the murderer is

Chapter 147 The Champion's Secret

When Dr. Gunan was traveling in the southern United States, he came to a village.At that time, the villagers were celebrating the harvest, and in a short while, the celebration would reach its climax, which was the exciting 26-mile long-distance race.But for some reason, Gunan found that people's faces were so gloomy, and they seemed unhappy.So he found the only referee in charge of the game and asked why.

The referee said: "This village holds a long-distance running competition every year, and the champion can get a prize of 1000 US dollars. After the death of the old village chief, his son became the leader. He let his own son Joann participate in the competition. Since then, Joann wins the championship every year, and the $1000 prize always falls into his hands.

The village head set a new rule for the long-distance running: the athletes do not start together, but start every 5 minutes, go through the forest over there, make a circle there, and then run out of the forest and return to the original starting line.

And Joan is always the first to run, I'm sure Joan just ran into the forest and hid in it, and ran out when it was about the same time.

You know, I am the only referee for this game, and I was called from another village.I am not afraid of the village head here, I want to expose Joan's tricks, but no one will help me.The villagers here dare not speak out.The village chief ordered that no one should follow the athletes.Moreover, the village head threatened to increase taxes if the villagers did not participate in the long-distance race. "

After hearing what the referee said, Gunan said: "You don't need to ask anyone to help. You only need a tape measure, which is enough to expose his tricks." The referee followed Gunan's suggestion and indeed exposed the village chief's true colors.How did Gunan expose the village chief's trick?
[Answer] Measure Joan's calf at the beginning of the game, and then measure it again at the end of the game.After running 26 miles, the circumference of the athlete's calf increased by about 1 inch.

(End of this chapter)