Jenessa Connor is a writer with experience writing health, fitness, and nutrition topics for publications, websites, companies, and experts in wellness spaces. Both back squats and leg extensions ...

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 ...

These muscles have a variety of different functions and help your body move in different angles and directions. This is why fitness facilities typically feature a number of machines (e.g., the lat ...

When it comes to resistance gym machines, the back extension is underrated. Just ask strength and conditioning coach Andy Vincent. When I hit him up for which machine he believes is most effective for ...

Several studies describe that in addition to the thoracic and lumbar muscles, the Latissimus dorsi (LD) and hip extensors contribute during trunk extension performance. [28,30–33] These findings ...