The length of achilles tendon is determined by genes. The normal achilles tendon is about 15CM. Like NBA basketball players, they all bounce better because of the long achilles tendon. Kobe's achilles tendon is 30CM long, which is twice as long as that of normal people.
The calf muscles are mainly composed of gastrocnemius and soleus.
Gastrointestinal muscle has a medial head and a lateral head, and its main shape is spherical, which constitutes the main shape of the calf; Soleus muscle, long and flat muscle, can stretch the calf visually.
The calf is easy to be thick, and the intestinal muscles are more developed than the soleus muscles.
Often do explosive sports, intestinal muscles will become strong, such as sprinting.
Low-intensity aerobic exercise like jogging will not thicken the calf, so you must stretch the calf after running. Marathon runners have slender calves.
Be sure to stretch your calves after exercise.
Stretching is very important to keep your legs from getting thicker!