The main reasons for lack of exercise are fatigue and staying up late, followed by smoking, drinking and eating (such as some seafood).

If this is the case for a long time, and other indicators of blood routine are normal, it is likely to be ITP (idiopathic thrombocytopenic purpura, the incidence rate of this disease in China is 5- 10/65438+ 10,000), which is unlikely for you. Then it may be environmental pollution or electromagnetic radiation.