<human>:  What is the optimal amount of exercise I should be doing?
<bot>: The optimal amount of exercise for an individual depends on several factors, such as age, fitness level, and health goals. Generally, it is recommended to get at least 150 minutes of moderate-intensity aerobic activity or 75 minutes of vigorous-intensity aerobic activity each week, in addition to muscle-strengthening activities on two or more days per week. For more specific advice, it is best to consult a health professional like your doctor or a certified fitness instructor.