Persantine stress test is used to detect heart complications particularly, coronary artery disease. This test is a perfect substitute to exercise based stress test.

Your blood sugar level rises, when you are stressed. Stress hormones like cortisol and epinephrine, lunge in since one of their functions is to raise the level of blood sugar when it is required the most.  

Stress headaches, also known as tension headaches are usually triggered by some sort of internal stress or environmental factor.