Adding short, weighted stretches between your weightlifting sets won't actually make your calf muscles grow bigger in young men who don't train regularly. The tiny changes you might see are just normal measurement noise, not real muscle growth.

Doing a short, weighted stretch between workout sets doesn't reliably make your calf muscles grow bigger compared to just resting normally. This suggests that stretching between sets might only help certain muscles, rather than working for every muscle group.

Adding a short, weighted stretch between your workout sets can make your calf muscles grow bigger over two months. This happens because the stretch keeps the muscle working longer, which helps it build more size than just resting normally.

Adding long static stretches to your regular weightlifting routine might actually help your calf muscles grow bigger in specific spots. Research suggests that doing this for 12 weeks could increase muscle size by up to 23% in experienced athletes.

Doing long static stretches along with weightlifting for 12 weeks can change the angle of muscle fibers in certain parts of the calf muscle, but not all parts. This means the muscle adapts differently depending on where you look, rather than changing evenly throughout.

Adding stretching between your weightlifting sets can help you build more muscle faster than just resting normally, without making your workouts take longer. Research suggests this method can lead to about 10.5% more muscle growth compared to 6.7% with regular rest over two months.