30 mins of intense cardio not enough?
 

So, on days when I don't work 2 jobs (on those days I walk 5 miles in a total of 1.25 hours and stand for another 4), I go to the gym with my fiancé. He's doing the weight lifting thing and I'm doing cardio. Recently I've tackled interval training on the stair master for 20 minutes and finish up with 10 minutes of rowing.

I know eventually we both will have to ramp it up, but right now those 30 mins leave me very tired and my legs, arms and abs are stiff. I really give 'er in the time I'm at the gym. Plus we walk there and back - 15 mins one way.

Is this too little for now? Should I jump into an hour right away?

It depends on what your goals are. I barely do any cardio anymore because I honestly don't really like it. I've seen better results weight lifting with HIIT thrown in. I run sprints between sets or jump rope to get my heart rate up. Do you enjoy cardio? Diet is for weight loss and exercise is for fitness. Everyone's goals are different, so everyone's program will be different too :).

Val, I have really good muscle structure on account of being in karate since I was 6 til I was 19. I've found that strength training doesn't yield results in me as effectively as cardio. Running was -great- for my body when I had motivation to do it. Stair climbing is growing on me, I want to conquer it and it keeps me motivated to push through the burn.

I'm just second guessing myself, usually when I enjoy something I find that it's not good enough...