THE LEG CURL is one of the best machines—and best methods, period—for building hamstring strength and size. There are two types of hamstring curl machines, and you're likely to find one or the other ...

A certified trainer shares 4 chair exercises that restore quad, glute, and calf strength for better walking and balance after ...

Position yourself under the Smith machine bar and brace your core. Lower slowly, keeping your torso upright. Aim for a knee bend of 90 to 100 degrees, or deeper if possible. Push through your heels to ...

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. Ready for leg day?

The leg press is a great machine for honing your lower-body muscles, allowing you to replicate the benefits of lunges and squats even if you have mobility issues. But you need to use the machine ...