Will you die if you are in a sub-health state for a long time?

No, but my health is definitely not good. I get sick easily. To put it bluntly, I am weak, and I can make up for it, so I won't die. But if I stay in this state for a long time, you will still mess around (such as drinking, smoking, having a bad sex life, and all kinds of unrestrained behaviors against yourself). If I'm young, I think I can last a few years. If I don't take care of it, I'm not far from death at this time, and I'm likely to catch a cold.

Just do more exercise. Nothing serious. Don't stay up late. Pay attention to a normal diet, and you will be fine. Don't worry.