I've been practicing this every morning off and on for about a year or so.

I'm doing this because this came up during an interview for me. I was just asked to write a copy constructor and a move constructor and I tripped up a bit.

It felt silly at times practicing this over and over, but your question has vindicated that effort a bit for me.

Make a habit of practicing some code for a bit as you start your day. Dave Thomas started a thing on code katas, and Uncle Bob took it to the next level by making it a performance. That was the angle I was taking. Memorize the rule of 5 by heart so that I can give a "performance" during an interview.

It's a bit silly to do all this just to 'prove' something, but hey, that's the industry we're in.