List 5 interesting facts about muscle system

1. It takes half as long to gain muscle than it does to lose it. 2. Muscles make up 40% of your total body weight. 3. The smallest muscles are found in the middle ear. 4. To take one step, you use 200 muscles.5. Muscles cannot push. 6. Humans are born with all the muscle fibers they will ever have.7. Your tongue is the strongest muscle in your body 8. It takes 17 muscles to smile and 43 to frown.9. When you’re cold, your muscles contract involuntarily. 10. The only muscle that never tires is our heart.

i added a few more than you need so you have a choice in what you want to use :3 <3