There are many differences in muscle exercise. Some exercises increase muscle endurance, that is, strength, etc. A little exercise will increase the cross-sectional area of muscle fibers, that is, increase muscle mass. Generally speaking, when doing an exercise, the maximum number of times a muscle can support is 10 to 15, which is meaningful for thickening muscle fibers. Exercise with the maximum number of times above 15 is generally more effective in increasing muscle endurance! There should be more detailed articles about this on the internet, so I won't extract them for you here. You can study them well and hope to help you!