1, parallel bars arm flexion and extension:
As a warm-up action for the chest, focus on building the lower chest.
Action points:
Clamp your elbows, lean forward, chin inward, and hold your chest slightly. Keep this posture at the beginning and end, and don't put the bottom of the movement too low, so as not to put too much pressure on your shoulder joint.
2, barbell flat bench press:
Create the entire bust. Different grip distances have different emphasis on stimulation. The pectoralis major in the middle is slightly narrower than the shoulder, the whole pectoralis major is shoulder width, and the lateral pectoralis major is slightly wider than the shoulder. If it is wider, it will focus on exercising the posterior deltoid.
3, the position of the foot:
Legs apart at a 45-degree angle, lying flat on the ground, can get strong support. If you want to step on the bench, your stability will be poor. You need to share some strength to control the stability of core muscles, so that you can't exercise your chest muscles to the greatest extent.
Important: Don't lift your hips and waist off the stool.