LG Diver
Guest
coach_izzy:20 minutes of "cardio" 3 times per week should be sufficient IF done properly. Doing so involves going well beyond the "target" areas, and is NOT pleasant physically, though the conditioning it produces is far superior to traditional training modalities.
The type of training you're referring to is not only inappropriate for someone interested primarily in weight loss and general fitness, but potentially dangerous without a sufficient level of base fitness to support this level of effort. I'm not sure what "conditioning" you're referring to, but lactate threshold training is about as applicable to someone looking for general fitness as trimix is to a 30' reef dive.