Three certified personal trainers weigh in on the best ways to strengthen your lower body without the pain. Here are the ...

Low back pain is one of the leading causes of disability worldwide, affecting up to 80% of people at some point in their lifetime. Not surprisingly, it is the most common ailment I treat in my office.

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. Hip thrusts are a ...