How much sleep does a 21 year old woman need?

According to Napolean, 7 hours is excellent for a woman.

8 hours like every one should try to get.

8 but 7 should be good enough

i think as a rule of thumb everybody need 8 hours

At least 8 hours a day

7.5 to 8.5 hours; just like the rest of us

Try for 8 but as long as you get at least 6 you should be fine.

it used to be 8 hours for the best possible sleep but now they upped it to 10. But hey I am 26 and got 30 minutes last night.

not more than 8 hours