Is there a such thing as "good karma"?

[EvolvingPhoenix]

So I was reading a post on Reddit by someone practicing semen retention. In his post, he makes the asinine assertion "I know that by doing it (retaining semen) I am building good karma"

I thought this statement was quite dumb.

Still, it got me thinking about the many misconceptions surrounding karma and then caused me to wonder just how well my own grasp of the subject is by this point.

In the past, my grasp has been quite poor. To this day, I believe I still have yet to fully grasp it enough that I would be confident trying to set peoples' misconceptions right in cases such as these.

I found myself wondering "Just what the hell even is 'good karma' anyway, and does such a thing exist?"

My best current understanding of karma is that it is luke a "case file" where you explore certain themes until ypu reach a point of forgiveness which shows you that neither you nor the self seen in another-self are deserving of mistreatment and nobody is to blame for anything. But I realize my grasp of karma is still far from expertive. I just also realize a lot of other peoples' misconceptions are at this point even MORE misguided.

So I'm sitting here wondering to myself: "what even IS good karma? Does it actually exist?"

I haven't reallt heard of people creating karmic UPWARD spirals. I feel like upward spirals seem more like the NATURAL CONSEQUENCE od healing yourself and getting out of your ego.

But I dunno. Does anybody have any perspective you can provide on the matter?