Spin Class VS Deficit Question

I just started a spin class at the gym, but question if I am figuring my deficit right because my weight is "stuck". I have lost 6 pounds since the beginning of January, but am now stuck since I started spin. My husband says it's because I'm gaining muscle?? I'm on my 3rd week of spin and want to make sure I am doing this right. I do it 3 times a week for 60 minutes. Just being alive I burn 1700 calories (5'2 33 yrs old female) According to CC a typical spin class moderate effort for 60 minutes burns 555 calories. So 1700 + 555 = 2255 - 500 should mean I can eat 1200-1755 calories on the days I do spin??? RIGHT?? On the days I don't do spin, I walk for 45 minutes on my breaks and lunch at work, so on those days I only eat 1200-1300 calories per day. Can someone help to make sure I have this figured out? THANKS SO MUCH!!

Well calories you burn really depends on a class and how much effort you put in to it. If you are doing it on easiest setting while barely breaking a sweat then 555 is an over estimation. On the other hand if you are really getting in to it, getting your HR up, etc then it sounds about right.

UD

OH, I'm getting into it.  My legs feel like jello afterwards and I am usually dripping in sweat!! 

I'd recommend getting a heart rate monitor.  They don't have to be super-expensive.  I have a fairly basic model, the Polar F4, which I got for around $60 new on eBay and which retails for about $100 (I think).  I got it because I didn't trust the calorie meters on the equipment in the fitness room in my building.  I also wear it to fitness classes, like kickboxing.  I think it's a good way to get a much more accurate estimation of calories burned.

 Well, don't forget the calories you would have burned being alive anyway - CC adjusts for that automatically if you enter the exercise in your burn tool so you don't have to adjust anything manually, you just need to enter the time spent.

 Then you look at what your burn estimate for the day is, and subtract 500 from that, and there's your eat goal for the day. While you could potentially have a 1000kcal deficit most people don't do so well on that unless they've got a 2000kcal intake and 3000kcal expenditure.

You need to create a 3500 calorie deficit to burn 1 pound so if you MBR is 1700 and lets say you eat 1700 on a spin day. Remove the 500 from 1700 due to spinning so you would lose a pound a week 500 cal deficit x 7 days. Eating 1200 a day and no spin should do about the same, a pound a week. This is all based on your MBR being accurate at 1700