I bought an elliptical machine a few months ago and I really like it. I was kind of half-hearted about it for the first month or so, but in the last couple of weeks I've made a committment to really push myself. I'm increasing by a minute every day; now I'm up to 38 minutes on incline 3, resistance 4. I'm guessing that means something different on every machine.
What is the best way to get the most out of my workout? My thought was to keep increasing till I can do 45 minutes, and then start cranking up the resistance and/or incline. I'm on resistance 4 now because any less and I pedal a million miles an hour and quickly wear out. I am getting a good workout because I'm really sweaty when I get done but I've noticed now that it's getting harder to get my heart rate above 130. Does that mean it's time NOW to start cranking up the resistance or incline (or both)?

