Usually because of either an active lifestyle or just a fast metabolism.
exercise, but not too much, dont worry about it too much at your age, NEVER skip meals.... this can make you gain weight
2000
trust me you dont want to gain weight! just let things happen and in time ul be big an strong stay active bud
yes, each year you should gain about 8-10 pounds, 12 year olds are growing so they will gain weight which is perfectly natural.
to gain weight while still remaining healthy, increase your meal size and increase your consumption of carbohydrates. do not rely on fried foods to gain weight because that is bad for your arteries.
EAT HEALTHY and exercise DONT TAKE DIETARY SUPPLEMENTS and dont QUIT EATING!!!!!!!!!
That's completely normal. Kids gain weight at that age. It'll pass.
yes you can always gain weight
no
Steroids
be lazy and eat a lot
Your actually underweight try to gain some weight...in a healthy way...