There could be many types of movements that may be counted as exercise. At my age, I count this as exercise - If I see trash on the floor, I pick it up. This is an exercise we all can do:unsure:, and since walking is good exercise as well, I will walk to the waste basket to throw things away which can be a chore for me at my age, LOL.
Life is not all about making long distance basketball shots, but it is good to be consistent in the amount of exercising you do at one time. It best to do as much as you reasonably can do even if it doesn't seem much at first and then gradually increase that exercise routine. :)