Balance is a component of physical fitness, not physical activity.

The recommended amount of moderate-intensity aerobic activity for adults is 150 minutes per week.

Regular physical activity is associated with a reduced risk of obesity, not an increased risk.

The FITT principle stands for Frequency, Intensity, Time, and Type.

The target heart rate for moderate-intensity aerobic activity is 60-70% of maximum heart rate.

Cardio is a type of aerobic exercise, not a type of resistance training exercise.

The recommended amount of resistance training exercises per week is 2-3 days.

Weightlifting is a type of resistance training exercise, not a type of flexibility exercise.

The recommended amount of flexibility exercises per week is 2-3 days.

Reversibility is a principle of exercise physiology, not a principle of exercise prescription.

The goal of exercise prescription is to improve physical fitness, reduce the risk of chronic disease, and manage chronic conditions.

Duration of activity is not a component of an exercise prescription.

The recommended amount of physical activity for children and adolescents is 60 minutes per day.

Sedentary behavior is not a type of physical activity that is recommended for children and adolescents.

The goal of physical activity for children and adolescents is to improve physical fitness, reduce the risk of chronic disease, and promote healthy growth and development.