How much cardiorespiratory endurance is enough?

According to guidelines from the U.S. Department of Health and Human Services (HHS), for general health adults should aim for 150 to 300 minutes of moderate physical activity or 75 to 150 minutes of vigorous-intensity aerobic physical activity each week.

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.