Doing more calf exercises per week (going from 6 to 12 sets) doesn't actually make your calf muscles grow bigger. In a short 6-week program, women who did fewer sets saw the same muscle growth as those who did more, meaning calves might not need as much training to grow.

Doing seated calf raises while keeping your knees bent (short muscle length) twice a week for three months won't really build up your calf muscles. Research indicates this specific method only leads to tiny, unnoticeable muscle growth.

Doing specific calf exercises for nine weeks can make the calf muscles bigger, but exactly how much they grow depends on how you position your feet during the workout. This shows that small changes in your exercise form can target different parts of the muscle differently.

For women who are new to weightlifting, doing 9 sets of calf exercises a week doesn't build bigger calves any better than doing 6 or 12 sets. This suggests that when you're just starting out, your calves don't keep growing bigger just because you do more sets.

Doing 12 calf raises a week for six weeks builds more lower leg muscle than doing just 6 a week for women who haven't trained before. This shows that doing more sets directly leads to bigger muscle growth in that area.

If you do weight training for eight weeks, the outer part of your calf muscle tends to grow bigger than the inner calf and the deeper calf muscle. This happens because the outer calf has more fast-twitch fibers that are naturally better at building size.