Although the muscles don't contract concentrically or eccentrically when you perform the squat, they are the primary spine extensors and also assist with lateral, or sideways, spine flexion and torso rotation ranges of motion.
Headlights in a dream indicate an approaching problem. You may see warning signs in your daily life which have caused you to fear an impending conflict. To be caught in the headlights in a dream means that you are feeling vulnerable to a problem which appears unstoppable.
Dreaming of watching sand flow through an hourglass is a symbol reminding you that time is passing you by, and you need to make the most of each day. Dreaming of an hourglass breaking is an ominous portent of catastrophe or unexpected death. This dream should prompt you to resolve your differences with your loved ones and take advantage of the time you have, because you never know when time will be out for either you or them.