Become Invincible

Is the protagonist's attribute increased by twice the life level or level 3? Are you trying to be funny? Your own setting is that the five-level 100-meter sprint is ten seconds, and the punch strength is six hundred kilograms, while a normal person's punch strength is four hundred or five hundred kilograms in twelve or thirteen seconds. I remember the results of our middle school races here seemed to be ten seconds or lower. It has been a year and I can't remember clearly. In other words, a normal adult can be regarded as the fifth level you set after exercising and becoming proficient in it, right? But what about the protagonist? Even if you are weak, you won't have to double the amount and still fail to pass, right? After saying that the protagonist has mental problems but not physical problems, is the impact on the body that big?