At the Winter Paralympics, athletes with prosthetics often modify them to fit their bodies more precisely. That has led to some competitors starting their own businesses to help fellow amputees.

Only 600 were ever made. Now the long-discontinued leg press machine has become a meme—and lifters are traveling to far-flung gyms just to try it.

If squats and lunges are too hard on your joints, use this four-move sesion workout to build strength and master the form ...