Final answer:
Cycling is an aerobic cardiorespiratory fitness activity that uses slow-twitch muscle fibers and oxygen to supply energy, thus improving cardiovascular health and muscular endurance.
Step-by-step explanation:
Cycling is an example of a cardiorespiratory fitness activity. This type of exercise is considered aerobic, which means it's characterized by continuous, rhythmic movements and it helps to improve the efficiency of the cardiovascular system. Aerobic exercises use oxygen to help supply energy to your body over extended periods of time. Unlike anaerobic activities, such as weight lifting or sprinting which involve short bursts of energy, cycling can be sustained over a longer duration and primarily uses slow-twitch muscle fibers.
Engaging in regular aerobic exercise like cycling has numerous benefits. It not only makes the heart stronger but also builds up endurance. It's essential for enhancing cardiovascular health and increasing muscular endurance. Cycling is a versatile aerobic activity that can be done outdoors or indoors on a stationary bike, giving people flexibility in how they choose to incorporate it into their fitness routines.