I've noticed lately that sometimes my elliptical workouts dont give me nearly the same calorie burns as others, and I'm guessing it's heart rate related. When I finished my workout today, my heart rate was reading anywhere between the 40s and the 60s, which is obviously wasn't. My watch literally lives on my wrist, so I thought maybe my arm hair was causing the problem, even though my arms are fairly typical for an average male. I shaved a spot on my wrist to see if that was the problem, and it seems to be just as bad as before. The only thing I havent done is tighten the strap a bit, as my rubber strap seems to have become a bit loose since I bought it at launch. The plastic ring has a few minor swirl mark type scratches on it, but its pretty clean in general. Anyone else had this issue? We'll see if the tightening fixes it, but its a little annoying because I like to shoot for the stupid daily ring goals each day.