Why is lack of muscle activity bad for your health?

This results in:

Violation of the metabolic processes of the body.
A drop in immunity.
The occurrence of cardiovascular diseases due to the fact that the heart is not trained enough and contracts strongly.
Muscle blood flow decreases. the supply of oxygen to the muscles is reduced due to disturbed metabolic processes.
Calcium deficiency is formed, which negatively affects the strength of bones, tooth decay, and the formation of blood clots.
Irritability, nervous tension is aggravated, insomnia occurs.