—This typical office worker's breakfast seems rich in nutrition and sufficient in calories. However, for many people, this hearty meal fails to sustain them until noon. According to research by nutritionists from the UK Food Council, the reason for the accelerated hunger is black tea and coffee.

Experts point out that both contain caffeine, which stimulates the adrenal glands to produce adrenaline, making people feel temporarily excited and seemingly full of energy. But as adrenaline levels drop, the body quickly returns to a state of fatigue, and hunger soon follows.

Experts believe that one should consume 1.5–2 liters of water daily, but tea and coffee have diuretic effects, so they do not effectively help hydrate the body. Therefore, for busy office workers with high work pressure, it is best to drink less black tea and coffee at breakfast.