By definition, comfort is a thing we want to provide for creatures that we love.
So why would we want to take any creature outside of its comfort zone?
Where does this idea come from?
It comes from the recognition that life consists of movement. It’s a reminder to ourselves that we should step outside of our comfort zone for brief moments, because without movement, there is no life.
Theoretically speaking, efficient life must be the continuous dance in between the two zones; the continuous fluctuation between the inside and outside of a person’s comfort zone.