The Science of Fasting

I have a random question for this group. I kind of figure this is a good place to put health and fitness related stuff so apologies if it's detracting from the purpose.

There is lots of information 'out there' suggesting that all you need is to be in a calorie deficit to lose weight - which is kind of true - and that if you're lifting weights and in a calorie deficit, you'll lose weight and lean out.

This is not the case for me. I will easily pack on muscle and I won't get fatter but I will not lean out. I just pack on muscle, retain my fat and that's it - unless I also incorporate a good amount of cardio. Why? I guess it's just irritating to me to hear "just lift and eat in a calorie deficit and you'll lean out" - not for me.

Everyone is not the same. While I only eat two meals per day, I tend to eat 7-8 eggs every morning with some ground beef or bacon, and then for my second meal I have a full ribeye most of the time at least 16oz or so and often paired with sweet potatoes, broccoli with real butter and cheese, or sometimes eggs again. If I had to guess my calorie intake is 2500-3000 per day on those two meals alone and it was what helped me go from 250+ to where I am now at 175-185.

On the flip side, I wanted to cheat and see what would happen if I went back to carbs and no intermittent fasting for a few weeks and I put on weight in a hurry at only about 1600-2000 calories.. I was eating what the FDA considers healthy foods, steel cut oatmeal, whole grain pasta and breads... not only did I gain weight, but my gerd and heartburn came back in force.

I'm back to eating mostly beef butter and eggs and already shed the weight I had put on and all the acid reflux issues are gone once again. Grains, whole or not just seem to be horrid for me. And it's not just gluten. The gluten free crap impacts me even more.