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
The idea behind daylight saving time is to take advantage of daylight hours and save energy. According to a 2008 federal Department of Energy study, U.S. electricity use decreased by 0.5% for each day of extended daylight saving time, resulting in a savings of 0.03% for the year as a whole, KING-TV, Seattle, reported. The savings are small in percentage terms, but in absolute terms, they added up to 1.3 billion kilowatt-hours â enough to power about 122,000 average U.S. homes for a year.