Eat 3 square meals. Try and eat 2000 calories per day, but make sure those calories come from healthy nutritious food, although a big mac now and again wouldn't really hurt.

Hit the gym. I'm assuming you're a girl so you don't want to be too muscly etc. but some light weights will add bulk.

You should try and put more protein in your body. Chicken and eggs are some good things to eat. A good meal consists of meat, rice, and some veggies.

You should also be sleeping 8 hours a day. And try and set a bed time to make sure you can accomplish the 8 hours a day.

If you had a fast metabolism why were you chubby in the first place?

Your metabolism and fluctuate.

I was the same way when I was little I was chubby but then I got skinnier when puberty started to hit me.

I was skinny, too, at 14, but my metabolism which was fast like yours didn't make me gain weight either, but I ate fresh food: meat, veg which was home grown and lots and lots of fruit. Oranges, apples and wonderfully delicious pears. Bananas because they're rich in potassium and vitamins and are actually quite slow-burn.

Someone here said work out in a gym. You don't need to do that, not yet. Your priority is to eat regularly, and a good breakfast - even cereal will help lay a good foundation for your body. Breakfast is actually the most important meal of the day, but if you can't manage much, get Mum to buy you some of those nice cereal bars, like Jordan's. These you can graze on throughout the morning.

Drink water, especially when the weather is hot. If you perspire, this means there is humidity where your body can't wick away enough moisture, and in hot weather, can be dangerous. Stay out of the sun, drink water. In my country that is Greece I'd drink up to 4 litres bottled water if the temperature rose as high as 48C. Drinking mineral water is beneficial as it contains much Calcium. So does milk which is lovely straight out of the fridge.

Try and stay off Coca-cola and Pepsi. They are loaded with sugar and caffeine. They won't help your thirst, either, but tea will.

It's all about sensible eating. I know, McDonald's is lovely, especially their cheeseburgers. have the occasional one if you want. Nothing wrong in pigging out.

Mostly it happens.. its not a thing that you are the only one, who hits the skinny stage.. its almost you can say.. the hormonal change which changes the behavior of your body and type..

>Implying that heavy weights will make her look too bulky

Also, OP should do GOMAD.

Heya dude

Yeah this happens to quite a few people kid no worries. Right the way most people's bodies develop is like this: They go outwards, making them look chubby (when you were younger yeah?) everyone goes through that. Then they have an upwards growth spurt, there they get tall and thinner. Then they go out more, then up, then out, until they've developed into who they are going to be. You can influence this with what you eat, but you can't change the forces of nature. You just need to wait for your outwards spurt, and make sure you're eating correctly to provide that spurt with the required energy.

Typically three meals a day aye? Breakfast, lunch, dinner. Don't eat before bed. Okay, main food group and primary energy source is carbohydrates, found in things like bread, pasta, potatoes - anything starch. It's easy to find carbohydrate rich foods on the internet. Least important food group - fat and sugar. Fat is used as a secondary energy source and is stored as insulation and waits there in case your carbs run out and you need back up energy. Sugar is the very basic form of energy, but is just simply not good for you. Starch is like the transformed version of sugar.
Protein is good too. It's what repairs and builds damaged muscle tissue, therefore, when you exercise in any way, when your muscles wear out, the protein is what builds a tougher extra layer on top. You need protein to actually MAKE the stuff that's gonna make you fill out more, you get me?
I recommend you start exercising if you are not already. Very light weights down the gym and jogging. The bare minimum is that you're supposed to be out of breath for at least fifteen minutes a day, three days a week. You start eating right and exercising properly, you'll soon start to fill out more.
Don't eat too much, but don't eat too little. exercise properly to put muscle on, not reduce fat. There's a difference. Eat plenty of carbohydrates and protein. Not much fat or sugar. You should fill out in time.

Huggles from Anna

Anastasia Salikhova wrote:

Heya dude

Yeah this happens to quite a few people kid no worries. Right the way most people's bodies develop is like this: They go outwards, making them look chubby (when you were younger yeah?) everyone goes through that. Then they have an upwards growth spurt, there they get tall and thinner. Then they go out more, then up, then out, until they've developed into who they are going to be. You can influence this with what you eat, but you can't change the forces of nature. You just need to wait for your outwards spurt, and make sure you're eating correctly to provide that spurt with the required energy.

Typically three meals a day aye? Breakfast, lunch, dinner. Don't eat before bed. Okay, main food group and primary energy source is carbohydrates, found in things like bread, pasta, potatoes - anything starch. It's easy to find carbohydrate rich foods on the internet. Least important food group - fat and sugar. Fat is used as a secondary energy source and is stored as insulation and waits there in case your carbs run out and you need back up energy. Sugar is the very basic form of energy, but is just simply not good for you. Starch is like the transformed version of sugar.
Protein is good too. It's what repairs and builds damaged muscle tissue, therefore, when you exercise in any way, when your muscles wear out, the protein is what builds a tougher extra layer on top. You need protein to actually MAKE the stuff that's gonna make you fill out more, you get me?
I recommend you start exercising if you are not already. Very light weights down the gym and jogging. The bare minimum is that you're supposed to be out of breath for at least fifteen minutes a day, three days a week. You start eating right and exercising properly, you'll soon start to fill out more.
Don't eat too much, but don't eat too little. exercise properly to put muscle on, not reduce fat. There's a difference. Eat plenty of carbohydrates and protein. Not much fat or sugar. You should fill out in time.

Huggles from Anna

Fat doesn't make you fat. That's just broscience from the 80's. For the vast majority of people (aside from extreme endurance athletes) a diet relatively high in protein and fat and relatively low in carbs is ideal for health. This isn't too strict if like OP they want to gain weight, but still ideal.

And why do you say "very light weights"?

Anna: What Frosty said. The body works very efficiently in ketosis/low carb environments. + it doesn't matter if you eat before bed, it matters WHAT you eat yes, but if it's just a regular healthy meal it will end up the same as any other food, in fact, your body is in catabolism during sleep, so food high in protein before bed is probably ideal (casein anyone?). Also, starch is a complex carb, not some transformation, it is just two or more glucose molecules put together.

Not trying to call you out or anything, just giving you advice on where you might need a little brushing up on human/food physiology/composition. *peace sign*

Do not worry about it. To gain the weight you should make the schedule for the exercise and diet. Another thing is that you should follow it on regular basis otherwise not effective to the body.