Stress isn’t always a bad thing, though. In some cases it protects us from danger—in fact, that’s the whole point. Stress is a leftover survival technique that we don’t have as much use for now. When we commonly fought for survival, our fight-or-flight mode (triggered by stress) was imperative.These days, the problem comes with having more stress in our lives than we need. Since we rarely need to be in fight-or-flight mode, our body’s stress reactions can become problematic when they’re too strong or happen too often.