1, soreness is the cause of lactic acid production in the process of substitution, which is common in sudden training and sudden high-intensity training. If the intensity is the same every day, the average person will not feel sore all the time. After all, pain is not helpful to training, but also affects training from the feeling. So the first one: "Is it good to feel sore after exercising until the next day?" Otherwise it's not strong enough? "Don't worry.

2. Exercise muscles by bodybuilding. The most important thing is to look at the feeling of muscles under a certain weight. Failure refers to the failure of the target muscle, such as your dumbbell bending, which makes the biceps fail, making it extremely congested (experiencing the feeling of muscle tearing) and promoting growth.

3. If you use intensive bodybuilding training, it is not recommended to rest for only 48 hours, but you should follow the 72-hour rule. Muscle fatigue is not conducive to growth.