respiration rate is not the same as heart rate although they trend in the same direction. I say this because I've worn a heart rate strap during all sorts of ex

respiration rate is not the same as heart rate although they trend in the same direction. I say this because I've worn a heart rate strap during all sorts of exercise and kettlebells do not elevate heart rate like cardio does, even though they feel like they should. That said, is intense cardio really that important for health? moderate cardio seems to give most of the longevity benefits.