The best score of 58 was improved by 5 seconds, and 53 seconds was the level of national second-class athletes. Unless you have superhuman physical quality and willpower, you must first ensure that your physical condition is stable, and you should not be overly excited or overly depressed. The amount of training every day needs to be gradual according to your physical condition, and you must participate in some high-level competitions every once in a while to test your performance. This also depends on your current weakness, whether it is physical coordination, strength burst or maintaining high-frequency endurance. Find these things. For training, in addition to maintaining efficient physical exercise every day, you need to have a happy attitude. It is possible to improve the average grade so much, but it is difficult to improve the best grade by 5 seconds. If the landlord insists on doing this, you can ask the teacher of your school sports training team or find a professional coach. It's not enough to say this on the internet by yourself.