Cori was able to improve so rapidly due to relearning.
Explanation:
Relearning promotes retention capacity of brain. After retrieving or recapitulating the previously learnt things a person can easily apply in his life. Practice helps in progress and enhance the quality also. If you keep yourself detach from a learnt things, automatically you will start to forget everything related with that.
Because everyday people use to learn something new. For e.g. when a student promotes to a new class he or she used to forget the lessons of previous class. Its quite normal. But you can keep the main things of every learnt lesson in a nutshell in your brain simply by practicing and relearning the things.
