A stress is considered a "bad" stress when it keeps a person from feeling good. Correct answer: C Bad stress is the stress that activates our “fight or flight” instincts and wears down the adrenal system and can cause major physical and mental health problems. Good stress on the other hand may be beneficial for you, because it helps inspire, motivate, and enhance your performance. What distinguishes bad from good stress is how you feel about the experience.