When a person is tired of lazy the stress of the body activate
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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.
For the junk food question junk food and alcohol/drugs are similar because they are both addicting for example when u want to eat junk food like a candy or mcdonald’s you kinda crave for more or want to eat it again that’s how drugs/and alcohol are like