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 an airplane crashing may be a metaphor for some aspect of your life that is in danger of ending quickly and unexpectedly; may be an indication that your goals or ideals are too high and unattainable; or it may be symbolize your self-doubt and lack of self-confidence in attaining these goals.