Cardiovascular System: This is the body system that includes your heart and blood vessels, which work together to circulate blood throughout your body.
Pulse: This is essentially another way to measure your heart rate by feeling it on different parts of your body such as wrist or neck where arteries are close to skin surface.
Arrhythmia: This term refers to irregularities in heartbeat rhythm. It's like when our drummer loses his beat; it can cause problems with how effectively our 'band' (body) performs.