- Out of stockJoanna Hall's WalkActive Book:The simple yet revolutionary way to transform your body for life.This is the foundation text to learn the scientifically verified WalkActive System to help you walk fitter + healthier + happier and supports the WalkActive App to help you walk fitter, healthier + happier.This book is currently available to buy via AMAZON as we are SOLD OUT here. Apologies but please do check back soon.