Soldato
Arching the back allows you to use your back muscles more, thus allowing you to lift much heavier weights.
I used to do this but found that my lats were becoming very tired from bench pressing when I went heavy!! I've stopped this now as I want to hit my chest when I perform chest exercises like the bench press.
It's different if you're a powerlifter or in competition as arching the back will allow you to go much heavier.... this really leaves you no choice in that scenario but as a body builder I'd say arching the back could be detrimental.
I used to do this but found that my lats were becoming very tired from bench pressing when I went heavy!! I've stopped this now as I want to hit my chest when I perform chest exercises like the bench press.
It's different if you're a powerlifter or in competition as arching the back will allow you to go much heavier.... this really leaves you no choice in that scenario but as a body builder I'd say arching the back could be detrimental.