I hit that wall too....

I swim, spin, bike, weight-train, play racquetball....at one point I was averaging about 15-18 hours per week of exercise and my calories were pretty low. It's taken a year and I've lost about 40-45 pounds of pure fat, gained some lean muscle and my blood-work has tremendously improved....but at this point I keep looking in the mirror and wondering when it's gonna come of.

When I go on long rides I always wear a heart-rate monitor that measured calories burned...what used to take me 1,200 calories I can now do in about 700: the body becomes that much more efficient...and let's not forget, I'm not carrying around as much weight when I ride, so it's easier! Point being, your body adapts!

Also, it's almost unfair how calories can add-up!!! I had lunch with my nutritionist and afterwards I asked him to estimate how many calories he took in....he figured about 1,100. When we really sat there and broke it down, it was closer to 1,900. It's almost unfair how many calories food has!

You're body has simply found an equilibrium....if you want to see further progress, you'll have to change it up and tweak the numbers. Sounds like your lower-body is ripped....perhaps look to do some swimming to nab some upper-body and lean things out in that direction.

But yeah, congrats on the weight-loss and especially being an instructor!!!