MythBusters · Video summary

Ninja Special! | MythBusters

MythBusters tests ninja myths: walking on water failed, stopping swords busted, and catching arrows is near impossible. Non-Newtonian fluids enable water-walking.

MythBusters · April 22, 2026 · 147-min episode · 7-min read

Key takeaways

🎯The legend of ninjas walking on water is largely myth; historical mizugumo (water spiders) were likely for mudflats or rice patties, not open water, and Mythbusters' modern replicas failed.14:41
🎯The '1-inch punch' is plausible for generating significant force at very close range, capable of knocking someone down, though less powerful than a full-strength punch.18:21
🎯Stopping a speeding sword with bare hands is highly improbable due to the immense kinetic energy and velocity involved, even with reinforced hands.26:25
🎯Catching a speeding arrow with bare hands is humanly impossible at realistic speeds (170+ mph); even a robotic hand required superhuman speed and force.34:00
🚀When testing claims of superhuman abilities (like catching arrows or deflecting bullets), rigorous scientific testing with robots and real-world constraints is crucial.34:00
💡Walking on water is possible using a non-Newtonian fluid like a cornstarch and water mixture, which acts solid under pressure but liquid when still, enabling running across its surface.46:12

Chapters

0:01🎯 Introduction to Ninja Mythbusting
2:02🎯 Origins of the Ninja
5:56🎯 Testing Walking on Water with Mizugumo Shoes
11:00🎯 Ninja Underwater Ambush and Breath Holding
11:19🎯 Water Walking in a Pool
1:18:42🎯 MRI and RFID Implant Tests
1:24:20🎯 Testing Armor and Airbag Myth
1:28:39🎯 Myth of Swatting Bullets
1:32:01🎯 Speed Camera Myths and Real Speed Tests
1:44:21🎯 Can a Ninja Catch an Arrow?
1:44:53🎯 Ninja Reaction Speed and Arrow Catching
1:49:16🎯 Simulating Underwater Blowpipe Attack
2:01:06🎯 Final Battle and Conclusions
2:14:22🎯 Bruce Lee's 1-inch Punch

The digest

High Level Overview

This episode explores several iconic ninja myths by scientifically testing whether ancient shadow warriors could perform feats such as walking on water, catching arrows mid-flight, and stopping lethal samurai sword strikes with bare hands. Drawing upon expert martial artists, robotics, and physics, the MythBusters crew examines these tales of supernatural ninja prowess for their plausibility. The findings reveal that while some myths are busted, others hold surprising truths when reexamined with modern technology and real ninja skills. This analysis is valuable for enthusiasts of martial arts history, folklore, and applied physics, clarifying fact from fiction in ninja mythology.

Keep reading in The Digest

The full 7-minute article, 14 more sections, and every new episode from MythBusters and the creators you follow.

Deep Dive into Ninja Myths and Tests
Origins and Context of Ninjas (00:02 - 02:35)
Ninja Training at Bujinkan Dojo (02:55 - 04:40)
Myth 1: Can Ninjas Walk on Water? (05:45 - 14:56)
Myth 2: Can Ninjas Stop a Lethal Sword With Their Bare Hands? (07:49 - 11:11, 15:28 - 26:04)
Myth 3: Can Ninjas Catch Arrows Mid-Flight? (18:53 - 21:05, 26:41 - 33:05, 43:45 - 56:15, 01:44:00 - 02:09:10)
Myth 4: Can Ninjas Use Blowpipes for Underwater Assassinations? (01:48:20 - 02:20:42)
Additional Findings and Myth Evolution
Key Frameworks and Models
Testing with Realistic Analogues and Instrumentation
Reaction Time and Reflex Baselines
Fluid Mechanics of Walking on Water
Practical Implications & Takeaways
Action-Oriented Summary

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