Exercise Equipment to Skip

10 Exercise Machines You Must Avoid

Just because a machine is in a gym doesn't mean it's safe—or effective. Stay clear of these popular machines

Train Smarter

10 Exercise Machines You Must Avoid // seated leg extension © Thinkstock

Image: Thinkstock
Think you're supposed to be lining up behind those sit-up chairs and hip abductor contraptions? Think again. Many of the most popular machines in the gym not only train your muscles incorrectly, they put stress on your joints and can lead to injury. For this list of no-no machines, we consulted Stuart McGill, PhD, professor of spine biomechanics at the University of Waterloo, in Ontario, Canada; Nicholas DiNubile, MD, author of Frame Work: Your 7-Step Program for Healthy Muscles, Bones, and Joints and trainer Vern Gambetta, author of Athletic Development: The Art & Science of Functional Sports Conditioning.

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