The Zoldyck family owns and lives at Kukuroo Mountain, a dormant volcano in the Dentora region of the Republic of Padokia, which stands 3,772 meters. Their estate is surrounded by huge stone walls guarded by a giant dog named Mike and attendants highly skilled in martial arts.
The position in which you sleep can cause your calf muscles to twitch severely. If you are in the habit of sleeping on one side with your knees bent at an angle, and your toes pointing straight, or downwards, there is a high probability that you may be caught unawares by cramps.
If the twitching is caused by stress or exercise, it will go away as the body becomes more relaxed. It can also be caused by damage to the nerve leading to a muscle, which may be treatable depending on the cause of the damage. Treatment in more severe cases will depend on the underlying cause of the fasciculation.