Try not to eat oranges and grapefruits before breakfast so as not to upset the acid-base balance in the stomach. The same applies to fresh citrus fruits, which, due to the abundance of fruit acids, can provoke gastritis.
Of course, we are not talking about all vegetables. You might be surprised, but cucumbers, tomatoes, and green leafy vegetables are not the best breakfast ideas. So, in tomatoes there is a lot of tannic acid, which causes a jump in acidity in the stomach, and in cucumbers and herbs there are too many acids, which cause heartburn and discomfort.
A cup of espresso is a great way to boost your metabolism. However, we are only talking about those cases when it is drunk after breakfast. If you regularly consume coffee on an empty stomach, then not only you run the risk of getting problems with the gastrointestinal tract, but also disrupt the functioning of the liver, which is responsible for detoxing the body.
Spices are well-known digestive accelerators. If you eat foods with an abundance of spices on an empty stomach, it can irritate the stomach lining and cause excessive release of digestive secretions, provoking ulcers.
The record amounts of magnesium and calcium in these fruits can affect the functioning of the cardiovascular system. The fact is that magnesium from them is absorbed on an empty stomach too actively, which provokes a high load on the heart muscle.