I think the answer is nervous system and muscular system work together but i could be wrong.
Answer:
My knee joints, sometimes my arm/elbow joints, ankle joints, and hip joints. The muscles are relaxing and contracting to let you move.
Explanation:
We need them so we can clean out our urinary system. when you go to the bathroom. <span />
<span>How can a person directly influence you to buy a health product?
- that everyone is talking about this product
<span>- its effectiveness</span></span>
