Watch as a leg extension machine cable suddenly snaps during a workout in Codo, Brazil, sending weights flying unexpectedly!

If you’ve ever been in a big-box gym before, you’ve seen plenty of guys doing classic leg exercises like squats and lunges and deadlifts. But there’s a good chance you’ve also seen a host of ...

That group of four muscles lining the front of your thigh deserves singular attention. This classic quads exercise is our favorite staple on leg day. Unlike compound exercises, isolating the ...