In fact, the simplest point of this sentence is that combing your hair can make your body healthier and reduce diseases; Eating too fast and sweating all over will cause many problems and some side effects.

This sentence makes sense, because there are many acupuncture points on our heads, and combing our hair can stimulate these acupuncture points through massage. We all know that massaging acupoints often has many benefits to our health, and combing our hair every day or many times can stimulate our own acupoints to the greatest extent, and can also directly affect our own health, naturally making diseases less frequent.

Secondly, eating fast is actually not a good thing, and such behavior will increase our gastrointestinal burden. Personally, I think that the stomach is actually a very important part for us. They need to undertake the task of eating, and their own burden is relatively heavy. Eating very fast will directly increase your burden. In the long run, it will cause many bad changes in our stomach and cause some diseases.

So I personally think this sentence is quite reasonable, because the two phenomena mentioned in this sentence do have certain scientific basis. For us, health is always the most important and core topic. Many times, what we don't notice will have a greater impact on our bodies.