You think you're thinking with your brain, but in fact, you're thinking with your entire body.

The traditional cognitive model believes that the brain is responsible for decision-making, and the body is responsible for execution;
whereas embodied cognition suggests that the body itself is part of the cognitive system.
Your emotions come from bodily feedback, your courage comes from bodily states,
your focus comes from the interaction between the nervous system and the environment,
and your thinking ability is even influenced by actions, postures, breathing, and sensory input.
Therefore, many people's ways of improving themselves are wrong from the start,
they try to persuade the brain to change themselves, but ignore that the brain itself is part of the body.
Cognition has never been a calculation performed solely by the brain, but the result of the entire body's participation.
It is precisely because of this that changing the body is not about changing behavior, but about changing the cognition that produces behavior itself.