Martial arts are fun.
About 4 years ago, I was training with a guy that just moved to the US from China, An Tian Rong. He didn’t speak any English (my friend’s mother would translate), but he didn’t really need to in order to get his point across. My buddy came for a lesson, and An demonstrated a technique on him. He pushed my friend with what I thought was a fairly lax maneuver. At best, I’d say his arms traveled about 6" or so. My friend, on the other hand, traveled about 7-8 feet backwards and slammed into the wall.
An was 62 years old at the time.
Earlier tonight, my current teacher (who’s 40, and weights about 135 tops) knocked me into a wall (I’m 25, and 165-170ish) with barely any effort at all. I was actually trying to resist at the time – it didn’t help.
My point is this: before getting tossed around effortlessly by a handful of MA practitioners, I probably wouldn’t have bought into the whole one-inch punch deal either. I’m pretty skeptical. After training with these guys for a bit, I’ve got to say they’ve convinced me. However, there’s really nothing magical about any of it. As another poster already mentioned, it’s all about proper body alignment. Anyone can learn to do it, if they’re so inclined.