Final answer:
Frequency in the context of exercise refers to how often you engage in physical activity. It's an essential aspect of a workout routine to improve overall fitness and endurance, but must be balanced with correct intensity and rest to prevent potential harm from overexertion.
Step-by-step explanation:
Frequency refers to how often you exercise. This is an important component of a balanced exercise regimen. Increasing frequency of exercise can help in improving cardiovascular endurance and involves engaging in physical activities like cycling and brisk walking on a regular basis. However, altering the frequency should be done mindfully as excessive physical exercise can indeed be harmful.
Aerobic exercise, for example, typically requires sustaining effort over a longer period with moderate intensity, using a high percentage of slow-twitch muscle fibers. In contrast, lifting heavy weights for a short time predominantly uses fast-twitch muscle fibers and is considered an anaerobic exercise.
It's critical to understand the distinction between frequency and intensity, as well as their respective roles in creating an effective exercise plan that targets different muscle fibers and delivers desired fitness outcomes without overtraining.