When you do exercises that stretch your muscles more through a bigger movement—like doing full squats instead of tiny half-squats—you may build more muscle tissue than when you stay in a shorter, more restricted movement range.

What we've found so far is that the evidence on whether a wider range of motion during resistance training leads to greater muscle growth is mixed. Our analysis of the available research shows 51.0 assertions support the idea, while 59.0 refute it. This means the current body of evidence we've reviewed slightly leans against the claim, but the split is close [1]. We looked at studies comparing exercises performed with a full, deeper range of motion—like full squats or full push-ups—versus more limited movements, such as half-reps or partials. The supporting evidence suggests that moving through a larger range may increase muscle stretch and activation, which could promote more growth [1]. For example, using a full range might engage more muscle fibers over time, especially in positions where the muscle is lengthened. However, a slightly greater number of assertions in our analysis do not support this idea. Some of these point out that while full range of motion may offer certain mechanical advantages, other factors like load, volume, and effort may matter more for muscle growth. In some cases, partial movements allow heavier weights to be used or target specific weak points, which might also drive results [1]. Our current analysis does not allow us to say one approach is clearly better. The evidence we've reviewed is divided, and the difference in support versus refutation is small. We also can't yet determine if the effects vary by muscle group, exercise type, or training experience based on what we've seen so far. Practical takeaway: If your goal is building muscle, moving through a comfortable, natural range that feels controlled and strong may be a good starting point—but don’t assume deeper or bigger movements always lead to better results.