What does it mean to start from Rest?

This episode is my personal wrestling match with the concept of Rest, which is the first, and I believe the most important, element in the Mental RACE philosophy and method. What does it really mean philosophically, psychologically, physically and in practical behavioural terms? 

With this episode I am starting a new format where I am aiming to consolidate the Mental RACE elements of Rest, Agency, Competence and Engagement. I am also trialing a new format of walk & talk in the nature. Easy walking and nature help me think, so I wanted to try if this then also extends to speaking my thinking out loud - please give feedback what do you think of this format and also just me rambling about a topic!