Let's see. I've been working out regularly for the past two years- and I mainly use the elliptical trainer. Started out in '05 doing 15-20 minutes just a few times a week, sporadically, then over the summer, did about an hour a day, 4-5 times a week. Besides a brief couple of months when I was too depressed to work out (or do anything besides eat), I have continued to use the elliptical about 5 times a week, over an hour each session.

Many people have been telling me that I should do something else, but I LIKE the elliptical. At this point, it is more for FUN then it is to lose weight. If I don't get to ride the elliptical, in my mind, my whole day is ruined. I like to work out long and steady. (My heart rate usually stays in the 140-160 range while I work out).

My friends think it is so strange that I can ride the elliptical for 2 hours straight, but a 30 minute jog or walk nearly kills me. Maybe that is strange...

My question is: I am sure that my body is used to the elliptical by now, after two years of regular use of the machine, but since I don't want to give it up, should I do some other type of cardio on top of that each day? I don't mind that perhaps riding the elliptical isn't as effective as it once was, because it's truly FUN for me, but I don't want to hurt my body if I can help it.