i read that you supposed to sit with your shoulders back but when i was a kid i always kept my shoulders slighty forward but only when i was in school did this stop me from growing horizontally? i am a male 21 years old 150 pounds 5ft6 and i have a 13 year old cousin whose shoulders look equal in lenght to mines. Did i affect the way my bones grew horizontally? also does walking with your head down does any harm to your height? will i get any wider and also are there any safe ways to increase height at my age and if i workout will the muscle mass stop me from acheiving correct posture?
how do i correct my posture?
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