Doing a full squat or starting a bicep curl from the bottom makes your muscles grow more at the far ends (like the top of your thigh or the outer part of your bicep) than doing partial reps from the...

Doing certain types of leg exercises that don't go through the full movement might build more muscle near the knee than doing the same exercises through the full motion.

Some studies say doing arm exercises with shorter movements builds more muscle in the triceps, while others think full movements might help the biceps more—but we just don’t know for sure what’s best yet.

Doing partial reps after you can't finish a full rep might build muscle twice as fast per set compared to doing full reps, even if you're lifting the same total weight. It’s like squeezing more muscle growth out of each workout.

Even if you lift heavier weights with your muscles mostly bent, you don’t grow bigger muscles than if you lift lighter weights with your muscles stretched out — the stretch matters more than how heavy the weight is.