Chest bench press straight up and down?
Chest bench press straight up and down? I can tell you clearly, no.
If the flat barbell bench press goes straight up and down, it will cause excessive shoulder abduction. This will put a lot of pressure on our shoulders and easily cause shoulder injuries.
The correct movement trajectory should be a diagonal line with the high point directly above the shoulders and the low point near the lower chest. Please see the picture below:
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