2. If you just start practicing, the pain will be stronger, and this state will be longer than others, but you won't feel anything for more than 5 days. Usually there will be some acid in 3-4 days, but it won't hurt very much. Large muscle groups like the pectoral muscles can generally be practiced once a week, not too much, and this week is enough for your pectoral muscles to fully recover. During this period, you practiced other muscle groups, such as back muscles, leg muscles, shoulders, abdomen and arms.
3. Two months can give your muscles some shape and hardness, but not very thick, which can lay a good foundation for your chest muscles. Generally, there will be obvious changes after continuous practice for more than 3 months.