How many hours does a 13 year old girl need to sleep?

I swear, i'm so mad.... and worried. What would happen if she doesn't need them?

I am allergic to dogs, cats, guinea pigs, pollen, dust and more! I need a medicine that is good for me and works for 24 hours

what's the avarage size peinus for a 13 year old?

I'm kinda short for 13 and I just want to know...

During puberty is it possible for a 13 year old to have problems with their short term memory?

I'm 13 and I'm 6 inches long and 5 inches wide. Is this small?

I weigh 148lb I am 13 years old and I am 5"6. How much do I need to lose to be in the middle of the healthy weight section? I...

Hi, I'm 13 years old and my height is just really.. well I sometimes hate it. I'm about 4"6 or 4"7 and I KNOW your are probab...

Im 13 and im 6foot 10inches how tall are you?

Kay. Im 13, almost 14. (; but im not all energetic like all the other kids my age. My mom just moved to virginia, and left me...