My back is always stiff and i can crack it all the time. i'm only 18. is this bad?

Posture : Consider your posture as a source for a stiff neck. Smart phone syndrome , poor posture from staring at a phone to text, is affecting many young people. The muscles stiffen, so something is going to give, and that's the cracking sounds you hear from your vertebrae rotating. Spend your day looking upward. Get a massage and ask family to tell you you're handsome as reminder to look up.