How can I fix rounded shoulders?

[elliotfan4ever]

I’m 14, my shoulders are rounded which makes my total shoulder width 17 inches, if my shoulders weren’t rounded it would 20 inches (possibly more I’m being conservative) I was wondering how I would fix my scapula and shoulders? And how long it would take? Also I know my neck is death tier, I’m training it to get thicker, it’s grown almost half in inch so far, my goal is 3 more inches

 

[zachh]

train back more, sleep w/o a pillow, and think abt ur walking, sitting, and standing posture 24/7.

 

[elliotfan4ever]

train back more, sleep w/o a pillow, and think abt ur walking, sitting, and standing posture 24/7.

How long do you think it’ll take? My back is like really “malleable” or wtv cause I’m young

 

[zachh]

How long do you think it’ll take? My back is like really “malleable” or wtv cause I’m young

idk just do it nigga