Maybe it's because I stayed up late recently, maybe it's because I didn't take enough physical exercise, or maybe I didn't pay attention to protect myself. It's all my own fault anyway.
How to prevent subhealth? Personally, I think it is good to go to bed early and get up early. Of course, you need to do it yourself, especially your own business. But sometimes if you are lazy and unwilling to move, you are willing to brush your mobile phone, and the result is that you are in a sub-health state.
I hope you don't have to exercise as well as I do, because this is the capital of the revolution.