The exercise before fitness is warm-up exercise. 1. Usually, you run on the treadmill for about five minutes. If you don't have a treadmill, stretch and jump in place, like broadcast gymnastics, and then run at full speed in place (step on your feet). Pay attention to the location. Don't run around in the gym. You're not a wild horse with a rectum. You hate. It's also humiliating to trip over equipment and fall on the dog to eat shit. Are you going to the gym or not? Objective: To activate cells, improve physical condition and tell my body that I will begin to soar in the ocean of equipment. 2. Take chest pushing as an example, and then "light weight, fast speed" barbell bench pressing, sitting with chest clamped, inclined up and down, each group. You can also be flexible and concentrate on doing an action. These groups are not included in the normal group number. Don't be lazy. Objective: To find a suitable training position quickly and adjust it to avoid the strain caused by heavy lifting. Before, a friend practiced chest exercises, and his shoulder and waist hurt, so he didn't have a good time. Do a good job of warming up and find the right position before practicing.