Is there a limit of calories the body can process at once?
What is mean is - if I eat, for example, a 12k cal meal, will I really make 12k cal worth of gains?
>What is mean is - if I eat, for example, a 12k cal meal, will I really make 12k cal worth of gains?
you'll gain over 9000 kcal worth of fat.
but there is indeed a limit - the size of your stomach is finite. at some point you will start throwing up, and cant fit any more food into your belly.
also, beyond that - the amount of digestive enzymes your body can produce during a given timeframe is limited, too. if you cramp tons of food into your body at once, your digestive system might not be able to fully digest all of it before you start shitting it out again.
I had put on some weight over the years, but based on the way I was eating, I should have put on a lot more than I did. So, yes, I'd say there has to be some sort of upper limit where your body doesn't absorb it and just shits it out.