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 ...

Today we're exploring an exercise that's often misunderstood but incredibly powerful: the weighted back extension. I'll break down what it does, who it's for, and how you can truly master it to build ...

A trainer shares the exercise that can best treat lower back pain. Discover exactly how to do it and why it works.

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." THE BACK extension, that time-tested move for building back strength, has been around the block. But here ...