In the most basic terms, the function of norepinephrine is to mobilize the brain and body for action. Norepinephrine release is lowest during sleep, rises during wakefulness, and reaches much higher levels during situations of stress or danger, in what has been called the fight-or-flight response.n the sympathetic nervous system norepinephrine is used as a neurotransmitter by sympathetic ganglia located near the spinal cord or in the abdomen, and is also released directly into the bloodstream by the adrenal glands.
By turning lights off, you could save 10 to 20 percent of your total household electricity usage. You don't necessarily need to turn lights completely off to save energy--use a dimmer switch. Incandescent Lights
1 You should leave the lights on because it takes more energy to turn them back on than you'll save by turning them off. 2  FALSE! 3  Fluorescent lights do take a small surge of power when turned on, but this is significantly smaller than the amount saved by turning them off. Fluorescent lights do take a small surge of power when turned on, but this is significantly smaller than the amount saved by turning them off. 2  It used to be that starting them shortened their life, but again this is not significant. 3  It's always better to turn off modern lights if leaving for more than a minute.