I'm really hoping you can offer me some really good advice here. Some quick background on me..I've been exercising for 6 years, both weights and cardio. Sometime in the last 3-6 months I've noticed my cardio and strength endurance is pitiful. I'm very strong but only for short sets (8 reps or so) with rests in between. Anything like PH or CTX or Firm type workouts kills me. In addition to that, I also seem to have diminished my cardio capacity to the point where I often get nauseous or dizzy while doing cardio, something that hasn't happened since I first started working out. I am currently working with a personal trainer 2 days a week (Monday is back and bis and some legs with several cardio bursts to keep the heart rate up, Wed is chest, tris and shoulders and some more legs also with cardio bursts). What tapes can I do that will fit with that workout schedule and help with both cardio and strength endurance? I have all your tapes or could also run although I would be just starting out with that. Thanks so much!