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.
Palpitations are irregular heart beats that can include skipped beats, extra beats (as many as 8 to 16 beats a minute), and a racing heart (as many as 200 extra beats a minute). Many people suggest that having palpitations makes them aware of their heart beating.. Women and men can have heart palpitations.