How Can I Lose The Fat In My Chest Without Building Muscles?

I have man boobs and i hate them i mean they are huge but they dont sag down ND I WANT TO LOSE THEM WITHOUT LIFTING WEIGHTS…WHAT SHOULD I DO CARDIO?

Im 14 And Have Man Boobs Can Building Up Muscles In The Chest Firm It?

im 14 and i have man boobs. i know its only temporary(i hope) but i have a classmate that teases me and i feel very shy when i see my crush. if i build up muscles especially in the chest will it make it good to see?