It depends, in Europe, you mainly can be 18, however, in America the limit is 21.
Protein helps build muscle and provide energy
D they are both cell division i learned this about 2 months ago
Muscles are also necessary for movement: They're the masses of tough, elastic tissue that pull our bones when we move. Together, our bones, muscles, and joints — along with tendons, ligaments, and cartilage — form our musculoskeletal system and enable us to do everyday physical activities.
