Leoni Jesner is a fitness, health, and lifestyle writer who has contributed to Byrdie and LIVESTRONG.com, among other publications. She is also a personal trainer, mat Pilates instructor, and ...

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 ...

Compound exercises are the most comprehensive set of training to stimulate muscle mass. These exercises engage your whole body, including your glutes, forearms, back, and core. They may include heavy ...

The low back is not typically an area that many clients ask me about — until they start experiencing pain in the area. But the truth is: The low-back should be a priority in our fitness routine to ...

The back extension is a versatile exercise that can be performed virtually anywhere. It can be used as part of a training program to build strength or a rehabilitation program for injury recovery.