Gauging cardio intensity

I'm willing to buy into the idea of lower intensity cardio for getting really lean, however, having previously been enamoured with HIIT I am having some difficulty gauging the appropriate intensity levels.

Granted, my heart rate is being maintained at 70-75%, assuming you can trust the machines heart rate monitor, yet even at the 40 min mark I'm only just beaking a sweat. Moreover, my breathing is barely strained and I feel little muscular exertion.

Should this be right? Are the anyovious indicators of appropriate intensity levels.

Cheers Hriliu.

this is the diet forum mate!! go to the appropriate forum

Are cardio questions are inappropriate for the diet forum?[I]

Yes cardio is a wokrout question not diet.