Final answer:
The most recommended exercise goals for frequency include 3-5 times a week for cardiorespiratory endurance and muscular endurance, 3 times a week for muscular strength, and at least 2-3 times per week for flexibility exercises.
Step-by-step explanation:
Recommended Goals for Exercise Frequency
The recommended goals for exercise frequency vary depending on the type of exercise. For cardiorespiratory endurance, it is advisable to engage in such activities 3-5 times a week. This includes aerobic exercises like cycling, walking, and running, which improve cardiovascular health and muscular endurance.
Muscular strength training, on the other hand, should ideally be done 3 times a week and can include anaerobic exercises such as weight training or sprinting. To develop muscular endurance alongside strength, it is equally beneficial to work on this 3-5 times a week.
Maintaining flexibility is crucial for a full range of motion and to avoid injuries, which can be achieved through flexibility exercises like stretching, yoga, or tai chi. For the best results, flexibility exercises should be performed before and after other exercises at least 2-3 times per week to increase flexibility.
The frequency provided in option a) aligns with professional recommendations and health guidelines, while options b) and c) are less supported by evidence-based guidelines.