I do 1 hour of cardio on my off days or every other day.
I walk at 3.8 to 4.1 MPH at 6-10 degrees elevation straight for one hour only. I watch my heart rate carefully that is why I oscillate on speed and elevation values.
The reason I persist with the cardio is for several reasons.
----First, by the time I finish with my cardio my vascular system has pushed blood into every vein and capillary in my body. I've even got a pump in my whole body upon completion of the cardio.
----Second, I feel a great deal better overall by doing the cardio. I guess it has a lot to do with the continuous breathing and blood circulation.
----Third, I'm in a lot better overall physical condition of fitness than if I were just weight training.
----Fourth, The cardio is aerobic training and the weight training is anerobic. Either is fine, but I'm enjoying both worlds.
My progress growth wise has been exceptional using HST. I am very happy with the results and my fitness level is improving constantly.
Since I'm relatively new you'll have to consider the source
I've just started my third cycle on HST.
I appreciate everyone's help on these boards and I'm not into refuting posters more knowlegeable than myself. These are my opinions and how I view the cardio as a part of my training.