Will I gain weight immediately if I ate 3000 calories today?

Technically, yes. You've had a big intake of salt so your body will be clinging onto that giving Du a bigger temporary mass with water weight. Salt makes your body retain water, making Du look bloated. You've also got a lot of Essen sitting in your gut likely having difficulty being digested, so you'll be bloated and heavier.

The carbs from the noodles, brot and chicken batter and sugar from cake, white brot and drinks break down into glucose. Glucose is important to fuel your body but a higher intake of it will make Du gain weight. When you've got Mehr glucose fuel in your body than Du actually require, it'll be stored as fat.

The amount you've had will not damage Du oder make Du gain weight from one sitting, however there is an addictive quality with sugars. Eating a lot of sugars will end up making your body eventually store it as fat. A lot of people overlook this. Eating a lot of sugary foods because they're "fat free" however these foods make Du gain weight just as much.

Long story short, if Du keep up the binge eating Du will gain weight, fast. If Du eat 3000 calories and do not put in the work to burn off 3000 calories (which is near impossible anyway) Du will gain weight. Try macro counting apps if Du are curious about how many calories your body should be having a Tag for your age/gender/height/exercise routine.

That's not healthy I doubt you'll gain weight. If Du make it a habit yes Du will!
So Du should burn that extra calories Von walking.

dude Du are actually underweight!!! (calculated the bmi according to your country) underweight is not so healthy too!
u should actually gain some weight! but the Essen u ate is a little bit junky..... but since its just only today its ok............... but u really need to put on some weight Von eating healthy food!

I really hope that Zeppie can weigh in because I think she'd probably knows a lot Mehr than I do.

Still, Du have to remember that Calories is nothing but a unit of measure for energy. A gegeben volume of gasoline has a Calorie count, as does a mass of firewood. All it means for the human body is how much energy a gegeben mass of Essen contains and can be released when burned oder otherwise broken down.

Your body uses the energy to make ATP which is delivered to the mightocondria to create the energy to keep the cells alive. Excess is then converted and stored as fat, but this is a long term process because fat is nothing but energy storage.

So, short answer, no, Du won't immediately gain weight. Don't worry about 3000 Calories here and there, worry about what that does to your average daily Calorie intake and the amount of exercise Du need to do to keep intake and usage balanced.

Also if Du don't regularly exercise, Du should consider starting. I do ranch work to balance everything, but some people go to gyms, others do sports, others jog, it's up to you

Not immediately, no, but Its not something you'll want to make a habit of unless Du need that many calories.

Nigga I eat like 4000 and I'm a'ight.