Did you know neck and back pain affect over 80% of people worldwide Poor posture is a leading cause, with neck pain present in 70% of cases. These common issues not only impact daily life but also result in missed - download at 4shared. Did you know neck and back pain affect over 80% of people worldwide Poor posture is a leading cause, with neck pain present in 70% of cases. These common issues not only impact daily life but also result in missed is hosted at free file sharing service 4shared.