1. If your breakfast habit is to eat something rich in carbohydrates or sugar, it is recommended to eat some food before drinking black coffee to avoid the enhancement of caffeine on blood sugar response, because this may limit your body's tolerance to sugar in breakfast.
If you are pressed for time and can't have breakfast before drinking coffee, you should at least eat something rich in carbohydrates, such as bread, steamed bread and various cakes, to protect the gastrointestinal tract and provide energy for your body.
For some people who need to stay awake or alert, drinking a cup of black coffee in the morning may help to refresh themselves and keep their concentration.
Generally speaking, everyone has different needs and habits. You can decide whether to eat food or drink black coffee first according to your own situation. Either way, we should keep the balance and diversity of our diet in order to obtain comprehensive nutrition.