You must be at least 17 years old to donate to the general blood supply, or 16 years old with parental/guardian consent, if allowed by state law. Learn more about the reasons for a lower age limit.
Other Causes of Elevated Heart Rate. Elevated heart rate when sick is actually your heartâs aid in order to quell the sickness. However, there can be other causes for elevated heart rate as well. Electrical signals produced and sent to the heart tissues are responsible for controlling the heart rate.
The heart accelerates it's rate when the body is stressed by a bacterial or viral infection, especially when accompanied by fever. If you are referring to a common bug that causes colds, gastronteritus, sinus headeches, etc., then the heart rate will rise in order to circulate immune cells and oxygen to the body in order to facilitate healing.