In middle to long distance swimming your hip rotation should be somewhat controlled (instead of fast and snappy). A swimmer at our clinic referred to this as 'hydraulic' hip rotation. This helps take some of the effort off the arms and legs to provide propulsion by helping everything work together.

We'll show you how to develop this in your stroke in this video.

The 5 Core Principles Of Fast Freestyle:
https://effortlessswimming.com/5-core...

To see our entire training on developing your hip and core drive see Core Principle #2 and #5 inside our video membership:
https://effortlessswimming.com/member...

Clinics:
https://effortlessswimming.com/clinic...