How can i get thicker if eating more doesn't work?

I'm almost 14 years old.. im 5'11 n i weigh 125 pounds. id really like to get thicker in my legs and butt b/c since im so tall, im really skinny... any suggestions? -oh and i tried eating more, it doesnt work, i have a fast metabolism.

u might have a throyd problem if u cant gain any weight...or ur build is small...workout but dont do cardio jus muscle building.

Start lifting weights and do squats and leg presses on the leg press machine. Use a weight that you can squat with for 10-12 repitions and at least 3 sets. Same on the leg press machine. Squats are good for the butt and the leg press more for the thighs.

work out im 5'10 and i work out when i was your age i was very skinny. But as years pass by with age you will thicken up naturally. Im thick now but not too thick. I am pretty curvy. But i like to stay toned so i work out.

well im telling you this i have a metabolism too and thats life i change by not doing any thing it will come to you soon just be patience.