Pain is normal, usually within 2-3 days. If the pain lasts for a long time, it means that you exercise too much. Remember to reduce the number of action groups next time you practice this part. If you are afraid that you can't effectively stimulate the muscles in the area, you can reduce the number of groups and increase the weight. Newcomers suggest reading more books before going to the gym. If you have enough money, you can hire a tutor, which can help you avoid many detours. Of course, the premise is that the private teacher is responsible ~