Here are some adjectives for heartbeat: sounder, slower, ancient and almost silent, steady exotic, rhythmic, cosmic, reassuringly slow, reassuringly slow and steady, tremendous, wild, deep empathetic, hypnotic, primal, rapid or irregular, slow, eternal, rapid irregular, single, slow, gigantic. In a healthy adult, the heart makes two sounds, commonly described as 'lub' and 'dub. ' The third and fourth sounds may be heard in some healthy people, but can indicate impairment of the heart function. S1 and S2 are high-pitched and S3 and S4 are low-pitched sounds. Done some research hopefully this will help
Cardiorespiratory fitness is the ability of the cardiorespiratory system to supply nutrients and oxygen to the body during sustained physical activity without fatigue. Endurance is a factor used to measure physical fitness. Cardiorespiratory fitness is the ability of the heart and lungs to function efficiently and effectively. Endurance refers to your body's physical capability to sustain an exercise for an extended period.
Its important to know how to find and check your pulse rate because if you want to excercise and make sure it gets your heart pumping, you need to know how to check your pulse rate before and after to make sure theres quite a difference.