4. What is a heart rate monitor? 5. What is perceived exertion? (pg. 172) 6. What is YOUR resting heart rat e? (pg 173) 7. What is YOUR maximum heart rate? (pg 174)

4. A heart rate monitor is a device that measures the heart rate. It can be a standalone device or part of a fitness tracker or smartwatch. The device typically uses sensors to detect the heart rate and display it on a screen or transmit it to a connected device.5. Perceived exertion refers to the level of difficulty or intensity that an individual feels during physical activity. It is a subjective measure of how hard a person feels they are working during exercise. Perceived exertion can be used as a guide to adjust the intensity of a workout and can be measured using various scales, such as the Borg Scale or the Rate of Perceived Exertion (RPE).6. The resting heart rate is the number of heartbeats per minute when a person is at rest. It is an indicator of cardiovascular health and can vary from person to person. For example, athletes may have a lower resting heart rate due to increased cardiovascular efficiency.7. The maximum heart rate is the highest number of heartbeats per minute that a person can achieve during maximum physical exertion. It is an important value for determining target heart rate zones for exercise. The maximum heart rate can be estimated using the formula: 220 - age. For example, for a 30-year-old, the estimated maximum heart rate would be 190 beats per minute.