Ok, so the last week I've finally given into doing cardio. I've always neglected cardio just simply because I hate doing it. But the only way I'm going to lean up is to suck it up and do it. Anyways, what would yall suggest to do for cardio exercise and length of time? Keep in mind I'm not wanting to get ripped or anything, just lean up. I'm at about 15-18% and I'd like to get down to 10-12%. I know running would be best but my only problem is I use to smoke and just recently quit so my lunges aren't in the best of shape. My girl said I need to work my way into running longer but I wanted to see what opinions I could get as far as doing other cardio. Thanks bros!!