Ok, I jsut started working out a few days ago. At the gym the trainer said when I do cardio to do it at least 40 minutes and to keep my heart rate in the fat burning area which would be about 130-155 if I understand correctly. Well I did the elliptical today and going as slow as the machine would go my heart rate was still 164 at the lowest. Is this just because I am out of shape> What should I do about this? Is the workout helping me at all? Please help..