May sound like a dumb question, but which way will burn more fat and help me drop some poundage, high intensity(on treadmill for 40 mins at 5.0 mph, my hear rate gets up to 165) or a lower MPH, and keeping my heart rate at 135. I mean i know its called fat burning for a reason, but i mean at high intenisty im sweating like a pig, n burn off more cals???