___________ refers to the length of time that you can keep going with an elevated heart rate-that is, how long your heart can endure a given demand.

Question

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Cardiovascular endurance refers to the ability of the heart and lungs to supply oxygen and nutrients to the muscles during physical activity or exercise. It is also defined as the ability to perform long-lasting, moderate-intensity activities, such as running or cycling, without getting tired or fatigued. This endurance is expressed as the maximum amount of time that an individual can sustain a particular level of physical activity before feeling tired and needing to rest.

___________ Refers to the Length of Time That You Can