As someone with
asthma, you know how important it is to monitor your
condition. You need to know how well your lungs are "working": is their ability
to move air in and out staying the same, or is it getting better or
When you monitor your asthma, you can control it. When you
control your asthma, you also control your life-you do what you want to do, and
your asthma does not limit you.
peak expiratory flow is an important part of
monitoring your asthma.