{"id":69331,"date":"2026-11-07T06:17:59","date_gmt":"2026-11-06T21:17:59","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=69331"},"modified":"2026-11-07T06:17:59","modified_gmt":"2026-11-06T21:17:59","slug":"human-relay-race-reveals-your-nerve-speed-the-hidden-drama-inside-your-body-in-just-0-187-seconds-sense-of-touch","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=69331&lang=en","title":{"rendered":"Human Relay Race Reveals Your Nerve Speed! The Hidden Drama Inside Your Body in Just 0.187 Seconds (Sense of Touch)"},"content":{"rendered":"

I’m Ken Kuwako, a science trainer. Every day is an experiment.<\/strong><\/span><\/p>\n

You touch something hot and yank your hand away. But how long does that actually take inside your body? You can’t see signals racing through your nerves, but you can measure their speed with nothing more than a human circle and a stopwatch. All you need is the courage to hold each other’s wrists.<\/p>\n

A Relay Through Your Nerves! How Does the Experiment Work?<\/b><\/h3>\n

The rules are simple. Everyone stands in a circle and gently grabs the wrist of the person next to them with one hand. (Middle schoolers might feel a little shy about holding hands, so wrists are a safer bet.)<\/p>\n

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One person holds a stopwatch in their right hand. They press start and, at the same moment, grab their neighbor’s wrist with their left hand. As soon as the neighbor feels the grip, they grab the wrist of the person on their other side. Keep passing the squeeze along like a relay baton. When the last person grabs the wrist of the stopwatch holder, stop the clock right away.<\/p>\n

Say you have 10 people. Divide the total time by 10, and you get the speed of one person’s complete loop: skin, nerve, brain, nerve, muscle.<\/p>\n

Surprising Results! How Fast Can We Think?<\/b><\/h3>\n

This time, a group of seven trainees took on the challenge, and the final time was 1.31 seconds!<\/p>\n

\"Diagram<\/p>\n

Take a look at the video here.<\/p>\n