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.
NREM sleep typically occupies 75â80% of total sleep each night. Many of the health benefits of sleep take place during NREM sleep â tissue growth and repair occurs, energy is restored and hormones that are essential for growth and development are released. REM sleep typically occupies 20â25% of total sleep each night.