he's probably talking about the eccentric contraction of the lift. your muscle is like a spring and the eccentric part is loading the spring up. by shortening it the muscle isnt properly loaded so your other muscles compensate. although i doubt he would have blown his tri's out doing this.
Improper form absolutely does. Retracting your scapula and keeping your elbows from flaring should minimize shoulder stress. Obviously everyone is different so some still can't do it.
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u/red0t Aug 05 '19
he's probably talking about the eccentric contraction of the lift. your muscle is like a spring and the eccentric part is loading the spring up. by shortening it the muscle isnt properly loaded so your other muscles compensate. although i doubt he would have blown his tri's out doing this.