Answer:
the alarm stage or response
Explanation:
The three stages of stress are alarm, resistance and exhaustion. and in this scenario it's the first one to be activated.
An esophagus, a trachea, lungs, liver, spleen, heart, stomach, small intestine and a colon!
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Being underweight can contribute to a very frail and weakened immune system. It can make one feel tired mentally. And can also affect the bones by making them very brittle and frail sometimes.