Bicycle Riding

I'm getting older and shrinking in height so trying to ride a 26 inch bike is a great task for me. I bought a 24 inch but haven't ridden it yet but really have to. With harvest time around the corner I have to start exercising my bad legs or I'll have a problem getting in the trucks. I need the job so have to get in shape. One of my friends told me one time that I should get in shape. I told him that round was a shape.