It helps your body get used to the allergen better. It just depends on the allergy.
        
             
        
        
        
Physical symptoms may be:
<em>* low energy
</em><em>* loss of sleep
</em><em>* headaches
</em><em>* nausea
</em>
=)
        
                    
             
        
        
        
1.  B. Very low internal body temperature cause by cold temperatures.
2. C. Heat stroke
3. A. apply sunscreen
4.  B. To inhibit oxygen supply through the body.
5. D. Stay hydrated with cool fluids
Hope it helps!