Why is physical inactivity harmful to human health?

1) With muscular work, all organs of the body are better supplied with blood.
2) With physical inactivity, the full blood supply to organs and tissues is disrupted.
3) The work of the heart, lungs, kidneys is impaired, resistance to diseases decreases, obesity occurs.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.