Have you ever been working on a player's forehand and thought "they're just not getting it". And instead of talking the player's ear off with detailed mechanics or trying every cue in the book, you decide to get them to throw a med ball.
All of a sudden, after just 1 or 2 cues - something like “thrust your rear hip” or “turn your torso, then release the ball” - they found the correct movement. You then return to hitting forehands and voila, they finally ‘get it’.
I recently heard that periodization is dead. For those who are unfamiliar with the term, it can be defined as the division of training & competition into various phases throughout the calendar year (this is of course a simplified definition - articles, books etc have been written on the topic but for our purposes, that’s all you need to know for the moment).
Before we tackle the statement from above, let me provide the background story. There was a once a time when athletes - primarily those competing in the Olympics - only had to (truly) peak once every 4 years.