The warm-up period before a workout allows the persons muscles to stretch out, and work up to the more intense workout, without hurting, tearing, or injuring. It increases heart rate, which loosens up joints, and increases blood flow to muscles, all which prevents the person from getting hurt.
I believe its C) Skipping meals puts your body in starvation mode and slows down your metabolism.
Neck and head, I believe. The vertebral column is your spine
