Why do I not feel good after consuming a lot of chocolates?

Eating sugary foods like chocolate or candy causes a spike in dopamine, which can make you feel happy and energized. However, when the dopamine levels crash, it goes well below the base level, which can in turn make you may feel tired, irritable, and even depressed. This is because dopamine is involved in regulating mood, motivation, and pleasure. When dopamine levels drop too low, it can cause a number of unpleasant symptoms.