What is stress?

First shock phase occurs when you receive the stimulus "stressful" your heartbeat is racing, your muscle tone and your sugar levels in the blood are collapsing. Your body will do everything at this time to adjust. For this, your nervous system sends a message to the hypothalamus which, acting on the medulla supernal gland releases adrenaline. 
 

What is stress?

 It provides the body with the energy it needs by increasing the rhythm of the heart (so its flow) to better oxygenate the muscles and tissues and facilitating the release of sugar and fat in the liver. This is a first stage in which memory and thinking are improved. Your pupils dilate, you have better vision. Whatever the nature of the stimulus, the biological response of your body will be always the same.

If the stimulus persists, you go to a resistance phase. Your body is in alarm and mobilization position to try to capitalize other resources to find a new equilibrium. He begins to secrete other hormones with soothing endorphin, cortisol, dopamine, serotonin, and finally of sex hormones. At this stage, stress is considered, from a biological point of view, as a beneficial stimulant for the organization, allowing it to react to survive situations that endanger.

If stress continues and your body is unable to cope because the necessary energy expenses are too high, you go to a depletion phase. Your immune losing ground, making you extremely sensitive to external influences. You are in a state of excessive tension. Your safety valve explodes. Then appear fatigue, anger and even depression. 

 There are no specific causes and established stress. It is never automatic or invariable answer. Faced with a similar situation, people react differently. Remains that there are aggravating factors: certain periods of life, certain mental states ... during which your body is more prone to develop reactions spiral.

What is the solution? Learn to manage your stress ...