Originally Posted by Ryoma
When you can squat 2 x body weight, you will feel light. It's mostly about strength to body weight ratio. SCS helps too.
And if you are talking about how FedEx seems so light on the court, it's because his game vastly limit his opponent's return option, meaning that he dictates where the ball is coming back most of the time. And he seldom chases ball outside of the double side lines any more.
Well, he's also very light on his feet when he moves. There's some technique to it.