Studies show most adults need between 7.5 and 8.5 hours of sleep to feel rested but theres no magic number. Thomas Edison got by on catnaps; Einstein needed ten hours, while actress, Penelope Cruz tucks in for a full fifteen. Your ideal sleep needs are personal a combination of three factors: genetic make-up, bio-chemistry and stress level, says Joyce Walsleben, PhD, co-author of A Womans Guide to Sleep. Take our quiz to determine how much shut-eye you require - and learn ways to reset your bodys clock.
Which is true for you?
On weekends, I usually
What would your dream vacation be?
At the end of a party, Im usually
Do you doze off during the day?
When the alarm rings, do you hit the snooze button
When do you usually get a second wind?
Which room in the house do you spend most of your time?
Would you prefer to meet friends for?
Would you say your metabolism runs?