It is a scientific method to measure by self-weight, because people with different weights can't compare their own strength base. A man's body structure can certainly push up his own gravity. If he can't push it, it can only show that he lacks exercise or nutrition and his physical function has deteriorated.
If you are an athlete, it is not enough to put yourself on the bench. In the United States, the requirement for explosive athletes is always 1.5 times the weight of bench press. This is a common law in American sports, so American high school students who join the school team will be asked to practice bench press.
Extended data:
When doing bench press, don't focus on the weight of the arm pushing straight from flexion and extension, but focus on the process of pulling the upper arm from both sides to the middle by the pectoral muscles, and feel the contraction of the pectoral muscles. Because most of us want to build plump and chiseled muscles instead of lifting weights, we should concentrate on muscle contraction and stretching instead of lifting weights.
Hold the barbell with both hands, wider than the shoulders, and buckle your thumb on your index finger. The appropriate grip distance should make the forearm basically perpendicular to the ground at the lowest point of action. If the grip distance is too narrow and the triceps brachii participates too much, it will weaken the stimulation to the pectoral muscles, while if the grip distance is too wide, it can only exercise the outer side of the pectoral muscles.