Exactly, this is the core concept of homeostasis. Organism in equilibrium? Passive. Stimuli toy with the balance? Compensatory behaviour to restore equilibrium.

Exactly, this is the core concept of homeostasis. Organism in equilibrium? Passive. Stimuli toy with the balance? Compensatory behaviour to restore equilibrium. Humans work just the same, the only difference is the complex brains that allow complex compensatory behaviours.