Answer:
I don't think you can get a refund but I don't know.
Explanation:
<span>a morbidity survey of the general population, like the national health interview survey</span>
aerobic is a respiration without air so you body need to supply oxygen to your muscles
It needs atleast 20 minutes a day in order to have an effective cardio exercise.
If you really wanted to have a good cardio exercise that will benefit you and have a good health and healthy lifestyle, then you have to spare your 20 minutes a day.
It would depend on how bad the tear is. You have tendons in your knee, most notably acl and pcl and if you tear those bad enough, you will not be able to walk
