Final answer:
Frequently choosing exercises beyond a client's capacity often leads to an increased risk of injury, emphasizing the importance of gradual exercise progression tailored to an individual's fitness level.
Step-by-step explanation:
Frequently choosing exercises that are beyond a client's capacity will often increase risk of injury. When exercise intensity, frequency, or the target muscle is altered too rapidly or is too challenging for the client's current fitness level, it can lead to overexertion and potential harm. While it is important for effective strength training to increase the intensity of the exercise gradually to improve muscle size and strength, doing so too quickly can be detrimental. Aerobic exercises like cycling and walking aid in cardiovascular health, and anaerobic exercises, such as weight training, help increase muscle strength. However, it is crucial that the progression is tailored to the individual's fitness level to minimize injury and ensure safe improvement in both muscular strength and endurance.