Increasing Calories when Exercising?

As part of my journey to being healthy and thin, I recently joined a gym.  I just had my first session with a personal trainer, and she advised that I need to increase my calorie intake; because, if I'm only eating 800-1200 calories a day, and I'm burning off 500 calories in exercise, I can't survivie on just the remaining 300 calories.  She recommended that I bump up my calories to 1500 per day.

That does make sense, but I just wanted to get your feedback and see if you've encountered the same thing?

Thanks in advance.

I was adviced the same by my dietitician. It has been extremely had for me physically and mentally to do this. I was advised to increase from 800 up to 1200 and I'm only a little over 3 months out. I would check with your dietician for guidance in how to do it safely.

 I've been advised to do the same thing and I am also struggling (mentally) to up my calories.  I feel like I "shouldn't" eat that much, because I still have so much weight to lose (disordered thinking for sure).  On the other hand, I haven't lost any weight in weeks, even though I have been extremely physically active.  I suspect its because my calories are too low, yet I still struggle with seeing any caloric number above 1000.  

Personally, I would speak with a registered dietician, one with experience dealing with RNY patients.  Your trainer's advice does make sense and you probably do need more calories if you're exercising a lot, but unless your trainer has a degree in nutrition and is also experienced in dealing with RNY patients, she may not be qualified to advise you about what you eat.  In the first year or so after RNY, we do eat a very low calorie diet.  We are able to do so safely because we are under the supervision of a bariatric surgeon and because we have labs done regularly to make sure we aren't suffering from lack of nutrition.  So while you probably do need more calories if you exercise than if you don't, you probably don't need as many calories as your trainer's typical client would need.

Ditto ........what Kelly said. 

I was told by my physician not to increase my calories, but increase my protein intake. I was crashing after workouts. I increased my protein the days I workout and do fine.

Personally I have found that no matter how much exercise I got or get, it made no difference in my weight loss or current weight.  No matter what the experts said, my weight loss stayed the same whether I supposedly burned 500 calories a day or not with the same eating.  Same now.  I have been working exercising about an hour a day 3 or 4 days a week.  I have not changed the way I eat and my weight has stayed consistent.  
Of course everyone is different but you can only go by what is true for you.  If you find your weight loss satisfactory when you adjust your calories then that is what your body needs.  If you find that your weight loss stops, slows down or even reverses when you add calories in spite of your exercise then you know that you don't need to adjust your calories according to your exercise.  It is all individual and there doesn't seem to be a one size fits all way to it.

 ditto. it sucks 

Increasing your metabolism by hard exercise and good diet/calories is a beautiful thing for your future!!!   Most of us have messed up our metabolisms by dieting and WLS does exactly the same thing if you just sit there and let it work on it's own.

Maintenance will be easier if you exercise and eat well and a good lifestyle (for life) really should be our goal after undergoing this major re-routing of our digestive systems.

I would agree as someone who used to be pretty avid into exercise waaaaayyyy before surgery and now after I find that I have a very hard time getting even 600 calories a day and with the exercising that I do it is probably why I am not seeing the results that I would like. I would agree with the upping the protein, it will still add some claories but the protein will keep you from crashing! Good luck!