Even the middle parts of your muscles grow more when you stretch them fully during workouts — it’s not just the ends that benefit from full range of motion.

When you stretch your muscles fully during workouts, the ends of the muscles grow more than the middle parts — the stretch makes the muscle ends bulk up more than the center.

When you do strength exercises where your muscles are stretched the most (like lowering a weight fully), you build more muscle than when you only move partway through the motion, no matter which muscle you're working.

Even though muscles might grow a tiny bit more at the far end when stretched more, it’s so small that it doesn’t really matter in practice — all parts grow about the same.

Whether you're working your quads, calves, or biceps, stretching them fully during exercises helps them grow bigger — this works for many different muscles, not just one.

If you're already strength-trained, doing full lifts (like fully curling a dumbbell) won't make your muscles grow more than just doing the stretchy part of the movement—so maybe stretching your muscles under load is the real secret to getting bigger.