Rivastigmine (sold under the trade name Exelon) is a parasympathomimetic or cholinergic agent for the treatment of mild to moderate dementia of the Alzheimer's type and dementia due to Parkinson's disease.
Quick Answer. According to the University of Washington, cows sleep for approximately 3.9 hours per day, meaning that they spend about 16.9 percent of the day sleeping. Adult humans sleep for approximately 8 hours per day, which represents 33.3 percent of the day. Human infants sleep approximately 16 hours per day.
The U.S. Centers for Disease Control and Prevention reported that 30 percent, or 40.6 million, of American adults are sleeping six or fewer hours a day, and night shift workers, particularly those in transportation, warehouse and health care industries are at the most risk of not getting enough sleep.