Add Yahoo as a preferred source to see more of our stories on Google. Woman working out with lower back exercises Arm day, leg day, ab day—these are the familiar pillars of strength training. But what ...

Add Yahoo as a preferred source to see more of our stories on Google. We spend hours hunched over phones and computer monitors day in and day out. It’s no surprise we have an epidemic of back pain.

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Arm day, leg day, ab day—these are the familiar pillars of strength training. But what about lower back day? Our lower backs are often overlooked, yet they're a crucial part of fitness. Many of us ...