I just got finished 2 wks of long light jogging (1 hr). Now today I started 35 minutes of jogging(running) at maximum heart rate.(around 180-190 bpm). I plan this for about 3 wks. I know that I will have to begin intervals of sprints later. Anyway. the question is, will 35 min of max HR help my cardio base for grappling? Because it is over my 'cardio range'? It is about 90 to 100 percent max hr for me. I was told that 75 percent was best for cardio. Thanks.