You can train your calves every day; however, you’ll need to listen carefully to your body with any overtraining. Because your calves are a bit harder to target and are full of slower-twitch fibers, they can benefit from three to four sets in daily training, and this is how you will get the best results. Just remember, though, that if you need to rest, do rest. Otherwise, you can end up causing unintentional injury, which will set you back even further from your fitness goals.