How Much Sleep Do We Need 1.The result of lack of sleep ●Irritable, groggy and exceptionally (1)___________ 2 . Experiment: ● Sleeping time: 8 hours Exhibited fewer attention lapses ● Sleeping time: 6 hours Reacted (2)________ to a drunk person ● Sleeping time: 4 hours Suffered (3)______ falling asleep 3 . How to recover? ●short-term sleep deprivation Several nights of (4) _______ sleep ●Weeks-to-months sleep deprivation Require (5)_______time to recovery ●Months-to-years sleep deprivation Recovering time is (6)_________ 4. How much sleep do we need? ●Ideal time (7)______hours in average ●Sleep less than 7 hours Heart disease, (8)______and diabetes (9) ________higher risk of death ●Sleep more than 8 hours Heart disease, obesity and diabetes 30% increase risk of mortality ●(10)_______play a role in variation of the sleeping time needed