When I saw the video thumbnail I thought you were making a joke post… okay looked at it. Weird guy. But looks like a solid workout. I question his form and implementation one arm push-ups though.
About the only thing in that video I’d comment about, is that doing knuckle pushups on a hot asphalt parking lot IS an incredibly effective way to quickly build up calluses on your knuckles
First experience with that, was switching to a Goju Ryu karate school, from the Shito Ryu school I’d been training in, because I wanted to fight, and the Shito Ryu school did not have kumite.
The Shihan made us do knuckle pushups in the parking lot (girls were allowed to do them in their palms).
He was also an oldschool a-hole. I remember one of the first times we were doing these pushups, one of the guys stopped because there was a small sharp piece of gravel under one hand.
The Shihan yells, “Boone! What are you doing?!!!”. Boone yells out, “Just moving a pebble, sir!!!”. Shihan yells, “Do you expect to ask your opponent to remove their jewelry and anything hard or uncomfortable before you hit them? GET BACK DOWN!!!”
After that, we made sure to look where we were standing, to make sure our knuckles didn’t wind up on anything too bad (it was a common use parking lot. You’d occasionally find shards of broken glass, too). Still wasn’t uncommon to stand up after a set of pushups, and pick out small bits of gravel from our knuckles, but we developed calluses very quickly.
As for the guy’s technique;
1) if you’re going to condition your knuckles, then do it properly. None of that thumb on the ground, stuff
2) if you’re conditioning your knuckles for striking, then condition the correct ones. Depending on martial art, that would either be the 1st and 2nd knuckles, or 2nd and 3rd.
The wrist alignment for landing a punch, varies by school/style. My preference is the wrist alignment to hit with the 1st and 2nd knuckles, for a very simple reason; you want to
avoid landing a punch on the pinkie knuckle.
A) it is the smallest knuckle and metacarpal. Condition it all you want, you will never be able to make it as impact resistant as the other knuckles
B) poor wrist alignment/punching technique that results in impact in the pinkie knuckle is crap form/technique.
Make a fist. Place your knuckles against a wall. Do this with the 1st and 2nd knuckles in contact with the wall. Try it with the 2nd and 3rd knuckles in contact with the wall. For me, with my 1st and 2nd knuckles against the wall, my pinkie knuckle is close to an inch away. With my 2nd and 3rd knuckles against the wall, my pinkie knuckle is only about 1/4” away.
Now angle your wrist/arm to put your pinkie knuckle in contact with the wall. See how much you need to angle your hand/arm, for that to happen? Landing a punch with the pinkie knuckle tends to impart a significant amount of lateral force. That, coupled with the the pinkie having the smallest, weakest metacarpal, means it breaks much more easily, and the break is always towards the edge of the hand, due to those lateral forces. The break is so common from poor punching technique, it’s nicknamed the Boxer’s Fracture.
Now look at the video. His fist is resting on the pinkie, 3rd knuckle, and thumb.