Many people sleep 8 hours per day -- that means you have 16 hours left in a day. Assuming about an hour/day is non-productive (getting ready to going to bed, waking up, etc), you have only 15 hours of productivity in your day.
If a person gets only 6 hours of sleep, she has an extra two hours of productivity per day ... or 13.33% more time. Over a year, that translates to an additional 49 days! Imagine having an extra 49 days to do whatever you want ... or start whatever projects you want.
Over a decade it is 490 days -- or an additional 1.34 years! That's an incredible amount of time one spends sleeping an additional amount. For some, those extra two hours of sleep are essential. For others, it is only a crutch and can be slowly worked into one's rest patterns.
