height increase

You stop growing in length when you hit about 18 of age. Until your 22th you will grow in width because your body will change in a man's body. (well, if you're a male!)

You grow from eating a lot of products that contain proteine. Google some proteine products, eggs are one of them! I also think that a lot of peanut butter helps a lot too! Good luck!

You need to play a lot of basket ball, foot ball or other strenuous activity, and eat a lot of high quality food which includes a lot of water, veggies, protein and complex carbs. Stay away from caffeine, sugar and junk foods in general.

first welcome to mylot.
good question though. i am no expert but i will share what i know. it is very important to have good nutritious foods for better growth of cells. so go for protein food - nuts, meat, milk and the sort. might be google will help you. proteins are veru essential for growth of cells and hence proper body development. also concentrate on getting good diet with all nutrients and minerals. they are also essential in proper body functions. when the body functions are normal then the growth also should be normal. don't eat carbohydrates food alone. they are essential but they alone will not be good.
happy mylotting.