I am currently looking to change my diet and exercise routine to lose some of my extra bodyfat. I have usually always stuck to lifting, running, and jogging as exercise. I run/jog every day of the week until I get to my legs day. And then, I find I don't want to risk overworking my legs by running. Are there any aerobic exercises I could do without the risk of overworking legs? Seeing as I have only experience in running, I don't know where to start.