Anyone can gain muscle fast without using steroids, but it requires a serious commitment to training and nutrition. If you're not achieving your muscle-building goals, you must change your training, diet, lifestyle or all of these.

Calf muscles atrophy for a number of reasons. Disuse following leg surgery, disease, nutritional deficiencies and genetic problems can cause the muscles in the calves to become weak and soft. Exercise, stretching and daily use can help with rehabilitation.