Aut cum scuto aut in scuto
I don't care how good your technique is that has got to take it's toll after awhile
Sort of looks like his arm hits before his hand, which, some kind of structural shield could be installed. Under closer inspection, the block starts to break before his hand touches it. Slow it down, frame by frame.
the block of wood which was baked in an oven for 5 hours at 350 degrees.
Years ago I worked with a serious bad ass karate instructor. He didn't teach for a living but he invited some of his day job coworkers, myself included to visit his dojo. One of us unwisely thought he would try that little trick shown above. I have a perfectly timed photo around here somewhere of him breaking his wrist. It's all good fun until somebody breaks something.
I messed around with a karate class a bit during grade school. I thought that the coolest thing in the world would be breaking boards like in this gif.The guys that were in the class and had been doing it for while said it would take time to get a black belt and be able to break a 2x4, but what was important was the training,,yada yada yada.I lasted about a month and one night just said to hell with it and that they could just give me whatever color belt you get for busting up some lathing strips.
That's a Brick, dammit! Well, a very dry brick, with no straw, just like sandstone! Well, sandstone created for the occasion. Well, it had sand in it. A friend has the boards she busted to get her black belt. A big flying back kick! Years of study! So I broke one with a left hand jab, another with an elbow, and another with a head butt. The karate school ran out of lumber. Or maybe they were just afraid that I'd do it with my...
My sister is married to an orthopedic surgeon. This is the sort of thing that helped Tom and Marit put Emily and Eric through college
My dad took karate lessons for a couple of years back in the sixties. He taught my brother and I how to break pine boards. We broke every piece of wood we could lay our hands on. It's really pretty much a parlor trick as long as you learn one important first principle. You better understand that wooden boards have a grain and you need to be able to know the difference between with the grain and across the grain.