Answer:
overstimulation is the correct answer
Some scientists believe that Alzheimer’s is often overlooked or under reported as the primary cause of death on state death certificates. The disease was listed as the sixth leading cause of death in the United States in 2013, according to the most recent data compiled by the Centers for Disease Control and Prevention. However, some studies suggest that Alzheimer’s may actually be the third leading cause of death, after heart disease and cancer.
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B . It is completely normal . However if you are experiencing extreme pain stop and consult your doctor . Also if you are prone to any kind heart disease let someone know where you are when exercising or better yet let them be at your side at all times .