Sleep less, live longer?
	
		
			
		
		
	
				
			Although it’s a common belief that 8 hours of sleep is required for optimal health, a six-year study of more than one million adults ages 30 to 102 has shown that people who get only 6 to 7 hours a night have a lower death rate. Individuals who sleep 8 hours or more, or less than 4 hours a night, were shown to have a significantly increased death rate compared to those who averaged 6 to 7 hours.
 
	 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		