Do my push-wall exercise in front of a mirror, and look at your back. I bet you it's arched. Obviously, don't do something that's painful. But it's important t

Do my push-wall exercise in front of a mirror, and look at your back. I bet you it's arched. Obviously, don't do something that's painful. But it's important to recognize the difference between "painful" and "uncomfortable." One is a sign you are doing something detrimental to your body; the other is a sign you are doing something you are unfamiliar with. If a low to moderate arch is what works for you, that's fine. I bench with a low to moderate arch, and yes, my bench is also considerably weaker than my other lifts.