I actually had it done at my gym quite a number of years ago. Frankly, the results were rather shocking. At the time, I was on a very strict, low cal, high exercise diet. I had a 19% body fat (same as right now, actually). My RMR was less than 1000 calories (I believe it was like 989 if I remember correctly). I was stunned.

Now I'm at the same body fat, 10 lbs heavier and I easily consume well over 2500 calories per day. I would bet that my RMR is closer to 1700 now. My GoWearFit (like a body bugg) tells me that on non-exercise days, I burn about 1700 - 1800 calories.

That test showed me how badly I had damaged my metabolism with strict dieting and excessive exercise!