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Asthenia or chronic fatigue syndrome is a signal that a person is very tired. It's all, maybe because of a lingering cold or because of stress. 
Let's talk about chronic fatigue syndrome, which has a seasonal nature and tell how it can still be fought.

It would seem, the habit of picking in the nose, well, what is so terrible, but if you do not get carried away with this activity in public and do not scratch the mucous membrane to the blood.

But what can lead to the picking of the hips, with what there are pneumococci and why children are at increased risk

The immune system is a complex mechanism within the body that plays a key role in defense against respiratory infections, viruses, and other diverse diseases that are particularly active in spring and fall.

If the immune system does not work well, viruses and bacteria can cause lethal harm. The immune system is protective, but its effectiveness is not always adequate and may manifest as a weakened or hyperactive immune response.
Millions of people around the world catch colds and flu every year, despite preventive measures such as wearing comfortable clothes and avoiding large crowds. Influenza and various viruses, in particular, can cause serious complications and are most common among immunocompromised people.

Bone marrow is the permeable, soft tissue that lies within most of the bones of the human body. It is often confused with the spinal cord, but the two tissues are very different. It is safe to say that the bone marrow is the main organ responsible for hematopoiesis. It produces stem cells, which are the basis of the immune system. The bone marrow is also involved in many metabolic processes and is highly complex, performing many functions. It plays a key role in the formation of new blood cells, its mass is about 5% of the total human weight.