To arch your back during a bench press or to keep a neutral spine? That is the question. Exercise scientist Mike Israetel says to go for the arched back. "Arching your back to get a better angle ...

A healthy spine has a gentle arch or curve. Arching your back excessively can tighten the muscles and lead to discomfort. However, arching the spine for brief periods should not cause health problems.

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. It’s easy to almost ...