This is a paid extension and requires a license to use. You can buy yours at https://gum.co/shortcutpractice
This extension helps you train the muscle-memory required to have you instinctively pressing those key combinations without hesitation.
More than 20+ apps with 1000+ shortcuts available right now for you to practice. We are adding these all the time and if the app you want is not currently supported yet, we are more than happy to add it for you.