I've always rode the bike only because I used to do my cardio at home and thats all I had. Recently I've been using the Eliptical machines at the gym and I'm sweating A LOT more and love it. I'm using the same heart monitor on my wrist and the heart rate is staying in the same zone so why am I sweating so much more? I'm not complaining, I love it like I said but it just seems strange to me...