Potential health benefits and risks of cardiorespiratory activity?

amount of physical activity

will not prepare you for running a marathon, but it can

improve your overall health and can result in some cardiovascular

improvements. The ACSM and CDC recommend

that if you want to improve your cardiorespiratory fitness

even more, you need to perform vigorous physical activities

(for example, jogging or running, walking hills, circuit

weight training, singles tennis) at least 3 days per week for

at least 20 minutes at a time; if losing weight is your goal,

you need to add to your daily routine moderate to vigorous

exercise for 60 to 90 minutes.