If you tend to lean too far forward during step-ups, this variation might be just what you need. The heel-elevated side step-up encourages a more upright torso and places greater emphasis on the teardrop-shaped muscle above the knee—the vastus medialis oblique (VMO). It’s an excellent option for anyone looking to strengthen their quads while improving…

Favor higher reps when performing seated leg extensions. The key is constant tension: use a moderate weight, go up to a soft lock at the top (not a full lockout), and don’t let the weight plates touch at the bottom. Keep the movement smooth and fluid, and push through the burn as much as possible….

Most people associate the hack squat with a sled machine, but this exercise was originally performed with a barbell. Named after old-time strongman and champion wrestler George “The Russian Lion” Hackenschmidt, the movement resembles a deadlift more than a squat. However, unlike a deadlift, the hack squat primarily targets the quadriceps rather than the posterior…