Also moderate movement (jumping Jacks, side steps, mini sprints) and stretching can speed up the freshening up while decreasing the risk of cramping

In my perspective IQ only has so many consequences, due to the limitations of the method. Nowadays we know to separate different forms of intelligence and also that transferring skills between those forms can have an impact on overall ‘performance’ . That being said, it can be a good indicator for stuff but as you point out, it’s often misused as divider instead of an accelerator.