The amount you eat should be controlled, and how much you eat should reduce the corresponding calories. A simple reference is that 100 grams of chocolate can reach about 600 calories, while 1 bowl of white rice has a calorie of about 250ml, two sweet biscuits have a calorie of 185 calories, and 1 fried eggs have a calorie of 136 calories.
You can eat it before exercise. If you eat a little chocolate before exercise, you can increase the glycogen storage in muscles, help improve your exercise ability, save glycogen consumption, delay fatigue, and help restore glycogen after long-term exercise. At the same time, because you want to exercise in the future, you don't have to worry about getting fat.
Patients with weak constitution and eating difficulties can eat chocolate properly to supplement energy, but it cannot be used as a nutritional supplement.