Reverse kegels w a finger inserted?

I recently had my annual prostate screening with my urologist where he inserts a finger (into the anus) and checks my prostate for lumps. No problem, I’m good for another year.

The finger insertion into the anus got me thinking: what if one were to do a reverse kegel like that? So I tried it in the shower.

Is there any benefit to having the extra pressure of a finger to push against? Similar to the feeling of having a stool in that space when when you defecate.

What if the finger applies some pressure against whatever is up there (what is it called?) for the pelvic floor muscle to push down against?

Might there be any merit to doing reverse kegels this way? And if so, what is it called? A google search showed the term “anal kegels” but I’m not sure. Anyone know?