Welcome to your mobility membership.

In this video, Pieter Schonfeldt introduces himself, shares his background in CrossFit and Functional Range Systems, and explains why this platform exists. You’ll learn what Kinstretch is about, how this membership is structured, and how it can help you move ...

New to Kinstretch or unsure what mobility training actually is? This video explains what Kinstretch is, where it comes from within Functional Range Systems (FRS), and how it helps real people move better in everyday life and training.

You’ll learn the difference between flexibility and mobility,...

Not sure if what you’re feeling during mobility training is normal? This video explains the key differences between effort, stretch sensation, discomfort, and pain - so you can train with confidence instead of guessing.

You’ll learn why mobility work can feel challenging even when movements are ...

Mobility training can be incredibly effective, but only if it’s done the right way. In this video, Pieter explains the most common mistakes people make when working on mobility, and why those mistakes often lead to slow progress, flare-ups, or recurring pain.

You’ll learn why forcing stretches, ...