bench press arch

[quack23]

just bought your book and tried benching with an arch after years of benching with a flat back. Afterwards i felt much more soreness in the upper back than the chest/shoulders. Just curious if this is normal becuase my back was significally more sore?

[Mark Rippetoe]

It is generally regarded as normal to experience soreness in areas that have never been trained before that are now being trained.