Ha! I love my cardio too and he says "go live life"! makes me wonder if we are not seeing the same guy. :). I walk my dog every day. I can tell when it feels easier and when it does, I start walking more. I also go to the rec center and get on the treadmill. Two months ago, I fast walked a 5 k and felt great. But...when heat and exhaustion hit, I get tired, tight jaw and breathless pretty quick and then I do Pilates. I cannot recommend Pilates enough for those of us with these symptoms.