Getting better at pinning defies logic

My pinning method and location is the exact same. Except when I first did it, it hurt and got so swollen I started panicking to my ex about how I was scared. And now... It doesn't? Like dude I can't even say i just got better at it. The universe is just fucking with me. My technique hasn't even gotten cleaner or anything, but like I'm just good now. Strange stuff!