At the beginning, you just need to ensure the standard of action and don't get hurt. Remember not to weigh too much easily. My gym has such a death case. On the premise of ensuring the first two questions, ensure the intensity of training as much as possible, so that the body can gradually adapt to the process of fitness. In general, it is best to finish anaerobic exercise in about an hour. Personally, I think 30 points is a bit small in Zhong Zhen.