WHY YOU NEED TO ARCH WHEN BENCHING! YES, you NEED to arch, and I don’t care whether you’re against this statement or not, because if you are.. chances are you’re mistaking the “right way to arch with the “wrong one”. Implementing an Upper Back Arch (Thoracic Extension) when bench pressing ensures 3 very important things. SAFETY: By lockig your shoulderblades back together and holding them there for the whole movement. STABLILITY. Arching your upper back creates a strong “base” or muscle. STRENg
