1, after a night of digestion, the morning is the time when the body's sugar is the lowest. Going to exercise at this time is very easy to cause hypoglycemia, leading to dizziness and nausea, and even fainting in severe cases.

2, exercise on an empty stomach in the morning, the body will break down more muscles to provide energy, and the reduction of muscles will lead to a decrease in the body's basal metabolic rate, which is more costly for people who lose weight and lose weight.

3, exercise after meals, not only can make up for the lack of blood sugar, but also provide more energy for exercise, make exercise more lasting, and the effect of exercise is naturally better.

4. Generally, don't eat too much breakfast, mainly high-carbon water, and start exercising after meals 1 hour.