Xue Sheng
All weight is underside
I run when preparing for tournaments, but I skip and weight train year round. I've always had good cardio and can usually spar 15 2 min rounds straight before I get tired. When I do run I usually just do short bursts of 15 seconds followed by 1 minute of jogging, and run for no more than 15 minutes. I honestly enjoy sparring and weight training much more and get most of my cardio from that tho.
Had a Xingyi shifu who, prior to getting into CMA, fought in Karate Matches and his view was if you are going to compete you just have to accept the fact that you will need to be running at least 5 miles per day. But if you are not competing he did not see the sense in it as long as you were in reasonably good shape.