In order to actually understand the material, you have to try and explain it to someone else. If you can’t put it in your own words, you don’t understand the material. It’s better to know that you don’t understand the material than to find out on exam day.
Most straight-A students will never get this edge, or even practice it. It doesn’t make you the best, it just makes your study skills better than grade A students.
It may be silly, but doing it on your own, who cares if it’s silly? The psychological aspect of refusing to be stupid is what makes learning hard. Like refusing to accept help and acknowledge you don’t know anything. Like learning to farm, or take care of chickens, or learn anything in life. Get over being stupid.